diff --git a/htdocs/public/paybox/newpayment.php b/htdocs/public/paybox/newpayment.php
index 1cba4d909a3..2c0187eef49 100644
--- a/htdocs/public/paybox/newpayment.php
+++ b/htdocs/public/paybox/newpayment.php
@@ -155,7 +155,7 @@ if (! empty($conf->global->PAYMENT_SECURITY_TOKEN))
 
 if (GETPOST('action','aZ09') == 'dopayment')
 {
-    $PRICE=price2num(GETPOST("newamount"),'MT');
+    $PRICE=price2num(GETPOST("newamount",'alpha'),'MT');
     $email=GETPOST("email");
 
     $origfulltag=GETPOST("fulltag",'alpha');
@@ -305,7 +305,7 @@ if (! GETPOST("source") && $valid)
 	if (empty($amount) || ! is_numeric($amount))
 	{
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-	    print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -392,7 +392,7 @@ if (GETPOST("source") == 'order' && $valid)
 	if (empty($amount) || ! is_numeric($amount))
 	{
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-	    print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -480,7 +480,7 @@ if (GETPOST("source") == 'invoice' && $valid)
 	if (empty($amount) || ! is_numeric($amount))
 	{
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-	    print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -656,7 +656,7 @@ if (GETPOST("source") == 'contractline' && $valid)
 	if (empty($amount) || ! is_numeric($amount))
 	{
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-	    print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -754,7 +754,7 @@ if (GETPOST("source") == 'membersubscription' && $valid)
 		print '</td><td class="CTableRow'.($var?'1':'2').'">'.price($member->last_subscription_amount);
 		print '</td></tr>'."\n";
 
-		if (empty($amount) && ! GETPOST('newamount')) $_GET['newamount']=$member->last_subscription_amount;
+		if (empty($amount) && ! GETPOST('newamount','alpha')) $_GET['newamount']=$member->last_subscription_amount;
 	}
 
 	// Amount
@@ -764,7 +764,7 @@ if (GETPOST("source") == 'membersubscription' && $valid)
 	print '</td><td class="CTableRow'.($var?'1':'2').'">';
 	if (empty($amount) || ! is_numeric($amount))
 	{
-	    $valtoshow=GETPOST("newamount",'int');
+	    $valtoshow=price2num(GETPOST("newamount",'alpha'),'MT');
 	    if (! empty($conf->global->MEMBER_MIN_AMOUNT) && $valtoshow) $valtoshow=max($conf->global->MEMBER_MIN_AMOUNT,$valtoshow);
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
 	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price($valtoshow).'">';
diff --git a/htdocs/public/payment/newpayment.php b/htdocs/public/payment/newpayment.php
index 98b06d8c365..1efd4a7c7a0 100644
--- a/htdocs/public/payment/newpayment.php
+++ b/htdocs/public/payment/newpayment.php
@@ -268,7 +268,7 @@ if ($action == 'dopayment')
 {
 	if ($paymentmethod == 'paypal')
 	{
-		$PAYPAL_API_PRICE=price2num(GETPOST("newamount"),'MT');
+		$PAYPAL_API_PRICE=price2num(GETPOST("newamount",'alpha'),'MT');
 		$PAYPAL_PAYMENT_TYPE='Sale';
 
 		$origfulltag=GETPOST("fulltag",'alpha');
@@ -366,7 +366,7 @@ if ($action == 'dopayment')
 
 	if ($paymentmethod == 'stripe')
 	{
-		if (GETPOST('newamount')) $amount = GETPOST('newamount');
+		if (GETPOST('newamount','alpha')) $amount = price2num(GETPOST('newamount','alpha'),'MT');
 		else
 		{
 			setEventMessages($langs->trans("ErrorFieldRequired", $langs->transnoentitiesnoconv("Amount")), null, 'errors');
@@ -647,7 +647,7 @@ if (! $source)
 	if (empty($amount) || ! is_numeric($amount))
 	{
 		print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-		print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+		print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -738,7 +738,7 @@ if ($source == 'order')
 	if (empty($amount) || ! is_numeric($amount))
 	{
 		print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-		print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+		print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -858,7 +858,7 @@ if ($source == 'invoice')
 		if (empty($amount) || ! is_numeric($amount))
 		{
 			print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-			print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+			print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"), 'MT')).'">';
 		}
 		else {
 			print '<b>'.price($amount).'</b>';
@@ -1079,7 +1079,7 @@ if ($source == 'contractline')
 	if (empty($amount) || ! is_numeric($amount))
 	{
 		print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-		print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+		print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -1202,7 +1202,7 @@ if ($source == 'membersubscription')
 		print '</td><td class="CTableRow'.($var?'1':'2').'">'.price($member->last_subscription_amount);
 		print '</td></tr>'."\n";
 
-		if (empty($amount) && ! GETPOST('newamount')) $_GET['newamount']=$member->last_subscription_amount;
+		if (empty($amount) && ! GETPOST('newamount','alpha')) $_GET['newamount']=$member->last_subscription_amount;
 	}
 
 	// Amount
@@ -1217,7 +1217,7 @@ if ($source == 'membersubscription')
 	print '</td><td class="CTableRow'.($var?'1':'2').'">';
 	if (empty($amount) || ! is_numeric($amount))
 	{
-		$valtoshow=GETPOST("newamount",'int');
+		$valtoshow=price2num(GETPOST("newamount",'alpha'),'MT');
 		// force default subscription amount to value defined into constant...
 		if (! empty($conf->global->MEMBER_NEWFORM_EDITAMOUNT)) {
 			if (! empty($conf->global->MEMBER_NEWFORM_AMOUNT)) {
@@ -1232,7 +1232,7 @@ if ($source == 'membersubscription')
 	}
 	if (empty($amount) || ! is_numeric($amount))
 	{
-		//$valtoshow=GETPOST("newamount",'int');
+		//$valtoshow=price2num(GETPOST("newamount",'alpha'),'MT');
 		if (! empty($conf->global->MEMBER_MIN_AMOUNT) && $valtoshow) $valtoshow=max($conf->global->MEMBER_MIN_AMOUNT,$valtoshow);
 		print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
 		print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price($valtoshow).'">';
diff --git a/htdocs/public/paypal/newpayment.php b/htdocs/public/paypal/newpayment.php
index 072307c8062..74f864d1e06 100644
--- a/htdocs/public/paypal/newpayment.php
+++ b/htdocs/public/paypal/newpayment.php
@@ -192,7 +192,7 @@ if (! empty($conf->global->PAYPAL_SECURITY_TOKEN))
 
 if (GETPOST('action','aZ09') == 'dopayment')
 {
-	$PAYPAL_API_PRICE=price2num(GETPOST("newamount"),'MT');
+	$PAYPAL_API_PRICE=price2num(GETPOST("newamount",'alpha'),'MT');
     $PAYPAL_PAYMENT_TYPE='Sale';
 
 	$origfulltag=GETPOST("fulltag",'alpha');
@@ -375,21 +375,19 @@ if (! GETPOST("source"))
 	$fulltag=$tag;
 
 	// Creditor
-
 	print '<tr class="CTableRow'.($var?'1':'2').'"><td class="CTableRow'.($var?'1':'2').'">'.$langs->trans("Creditor");
     print '</td><td class="CTableRow'.($var?'1':'2').'"><b>'.$creditor.'</b>';
     print '<input type="hidden" name="creditor" value="'.$creditor.'">';
     print '</td></tr>'."\n";
 
 	// Amount
-
 	print '<tr class="CTableRow'.($var?'1':'2').'"><td class="CTableRow'.($var?'1':'2').'">'.$langs->trans("Amount");
 	if (empty($amount)) print ' ('.$langs->trans("ToComplete").')';
 	print '</td><td class="CTableRow'.($var?'1':'2').'">';
 	if (empty($amount) || ! is_numeric($amount))
 	{
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-	    print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -402,7 +400,6 @@ if (! GETPOST("source"))
 	print '</td></tr>'."\n";
 
 	// Tag
-
 	print '<tr class="CTableRow'.($var?'1':'2').'"><td class="CTableRow'.($var?'1':'2').'">'.$langs->trans("PaymentCode");
 	print '</td><td class="CTableRow'.($var?'1':'2').'"><b style="word-break: break-all;">'.$fulltag.'</b>';
 	print '<input type="hidden" name="tag" value="'.$tag.'">';
@@ -475,7 +472,7 @@ if (GETPOST("source") == 'order')
 	if (empty($amount) || ! is_numeric($amount))
 	{
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-	    print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -585,7 +582,7 @@ if (GETPOST("source") == 'invoice')
 	if (empty($amount) || ! is_numeric($amount))
 	{
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-	    print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -783,7 +780,7 @@ if (GETPOST("source") == 'contractline')
 	if (empty($amount) || ! is_numeric($amount))
 	{
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-	    print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
 	}
 	else {
 		print '<b>'.price($amount).'</b>';
@@ -902,7 +899,7 @@ if (GETPOST("source") == 'membersubscription')
 		print '</td><td class="CTableRow'.($var?'1':'2').'">'.price($member->last_subscription_amount);
 		print '</td></tr>'."\n";
 
-		if (empty($amount) && ! GETPOST('newamount')) $_GET['newamount']=$member->last_subscription_amount;
+		if (empty($amount) && ! GETPOST('newamount','alpha')) $_GET['newamount']=$member->last_subscription_amount;
 	}
 
 	// Amount
@@ -917,7 +914,7 @@ if (GETPOST("source") == 'membersubscription')
 	print '</td><td class="CTableRow'.($var?'1':'2').'">';
 	if (empty($amount) || ! is_numeric($amount))
 	{
-	    $valtoshow=GETPOST("newamount",'int');
+	    $valtoshow=price2num(GETPOST("newamount",'alpha'),'MT');
 	    if (! empty($conf->global->MEMBER_MIN_AMOUNT) && $valtoshow) $valtoshow=max($conf->global->MEMBER_MIN_AMOUNT,$valtoshow);
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
 	    print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price($valtoshow).'">';
diff --git a/htdocs/public/stripe/newpayment.php b/htdocs/public/stripe/newpayment.php
index f606fe1d794..1b63c103f5f 100644
--- a/htdocs/public/stripe/newpayment.php
+++ b/htdocs/public/stripe/newpayment.php
@@ -202,7 +202,7 @@ else if (! empty($conf->global->ONLINE_PAYMENT_CREDITOR)) $creditor=$conf->globa
 
 if ($action == 'dopayment')    // We click on button Create payment
 {
-    if (GETPOST('newamount')) $amount = GETPOST('newamount');
+    if (GETPOST('newamount','alpha')) $amount = price2num(GETPOST('newamount','alpha'),'MT');
     else
     {
         setEventMessages($langs->trans("ErrorFieldRequired", $langs->transnoentitiesnoconv("Amount")), null, 'errors');
@@ -455,7 +455,7 @@ if (! GETPOST("source"))
     if (empty($amount) || ! is_numeric($amount))
     {
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-        print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+        print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
     }
     else {
         print '<b>'.price($amount).'</b>';
@@ -541,7 +541,7 @@ if (GETPOST("source") == 'order')
     if (empty($amount) || ! is_numeric($amount))
     {
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-        print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+        print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
     }
     else {
         print '<b>'.price($amount).'</b>';
@@ -652,7 +652,7 @@ if (GETPOST("source") == 'invoice')
     if (empty($amount) || ! is_numeric($amount))
     {
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-        print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+        print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
     }
     else {
         print '<b>'.price($amount).'</b>';
@@ -852,7 +852,7 @@ if (GETPOST("source") == 'contractline')
     if (empty($amount) || ! is_numeric($amount))
     {
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
-        print '<input class="flat" size=8 type="text" name="newamount" value="'.GETPOST("newamount","int").'">';
+        print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price(price2num(GETPOST("newamount","alpha"),'MT')).'">';
     }
     else {
         print '<b>'.price($amount).'</b>';
@@ -971,7 +971,7 @@ if (GETPOST("source") == 'membersubscription')
         print '</td><td class="CTableRow'.($var?'1':'2').'">'.price($member->last_subscription_amount);
         print '</td></tr>'."\n";
 
-        if (empty($amount) && ! GETPOST('newamount')) $_GET['newamount']=$member->last_subscription_amount;
+        if (empty($amount) && ! GETPOST('newamount','alpha')) $_GET['newamount']=$member->last_subscription_amount;
     }
 
     // Amount
@@ -986,7 +986,7 @@ if (GETPOST("source") == 'membersubscription')
     print '</td><td class="CTableRow'.($var?'1':'2').'">';
     if (empty($amount) || ! is_numeric($amount))
     {
-        $valtoshow=GETPOST("newamount",'int');
+        $valtoshow=price2num(GETPOST("newamount",'alpha'),'MT');
         if (! empty($conf->global->MEMBER_MIN_AMOUNT) && $valtoshow) $valtoshow=max($conf->global->MEMBER_MIN_AMOUNT,$valtoshow);
         print '<input type="hidden" name="amount" value="'.GETPOST("amount",'int').'">';
         print '<input class="flat maxwidth75" type="text" name="newamount" value="'.price($valtoshow).'">';