diff --git a/htdocs/langs/en_US/products.lang b/htdocs/langs/en_US/products.lang
index b8a7d377904..3dfabdc124d 100644
--- a/htdocs/langs/en_US/products.lang
+++ b/htdocs/langs/en_US/products.lang
@@ -295,7 +295,9 @@ ComposedProductIncDecStock=Increase/Decrease stock on parent change
 ComposedProduct=Sub-product
 MinSupplierPrice=Minimum supplier price
 DynamicPriceConfiguration=Dynamic price configuration
+DynamicPriceDesc=On product card, with this module enabled, you should be able to set mathematic functions to calculate Customer or Supplier prices. Such function can use all mathematic operators, some constants and variables. You can set here the variables you want to be able and if the variable need an automatic update, the external URL to use to ask Dolibarr to update automaticaly the value. 
 GlobalVariables=Global variables
+VariableToUpdate=Variable to update
 GlobalVariableUpdaters=Global variable updaters
 GlobalVariableUpdaterType0=JSON data
 GlobalVariableUpdaterHelp0=Parses JSON data from specified URL, VALUE specifies the location of relevant value,
diff --git a/htdocs/product/admin/dynamic_prices.php b/htdocs/product/admin/dynamic_prices.php
index 45086630c47..84ec54433cd 100644
--- a/htdocs/product/admin/dynamic_prices.php
+++ b/htdocs/product/admin/dynamic_prices.php
@@ -142,17 +142,20 @@ if (!empty($action) && empty($cancel)) {
  * View
  */
 
-//Header
 llxHeader("","",$langs->trans("CardProduct".$product->type));
+
 print load_fiche_titre($langs->trans("DynamicPriceConfiguration"));
 $form = new Form($db);
 
+print $langs->trans("DynamicPriceDesc").'<br>';
+print '<br>';
+
 //Global variables table
 if ($action != 'create_updater' && $action != 'edit_updater') {
     print $langs->trans("GlobalVariables");
     print '<table summary="listofattributes" class="noborder" width="100%">';
     print '<tr class="liste_titre">';
-    print '<td>'.$langs->trans("Code").'</td>';
+    print '<td>'.$langs->trans("Variable").'</td>';
     print '<td>'.$langs->trans("Description").'</td>';
     print '<td>'.$langs->trans("Value").'</td>';
     print '<td width="80">&nbsp;</td>'; //Space for buttons
@@ -184,7 +187,7 @@ if ($action == 'create_variable' || $action == 'edit_variable') {
     print '<br><table summary="listofattributes" class="border centpercent">';
     //Code
     print '<tr>';
-    print '<td class="fieldrequired">'.$langs->trans("Code").'</td>';
+    print '<td class="fieldrequired">'.$langs->trans("Variable").'</td>';
     print '<td class="valeur"><input type="text" name="code" size="20" value="'.(empty($price_globals->code)?'':$price_globals->code).'"></td>';
     print '</tr>';
     //Description
@@ -205,7 +208,7 @@ if ($action == 'create_variable' || $action == 'edit_variable') {
     print '<input type="submit" class="button" name="cancel" id="cancel" value="'.$langs->trans("Cancel").'">';
     print '</div>';
     print '</form>';
-} else {
+} else if ($action != 'create_updater') {
     //Action Buttons
     print '<div class="tabsAction">';
     print '<a class="butAction" href="'.$_SERVER["PHP_SELF"].'?action=create_variable">'.$langs->trans("Add").'</a>';
@@ -219,7 +222,7 @@ if ($action != 'create_variable' && $action != 'edit_variable') {
     print $langs->trans("GlobalVariableUpdaters");
     print '<table summary="listofattributes" class="noborder" width="100%">';
     print '<tr class="liste_titre">';
-    print '<td>'.$langs->trans("Code").'</td>';
+    print '<td>'.$langs->trans("VariableToUpdate").'</td>';
     print '<td>'.$langs->trans("Description").'</td>';
     print '<td>'.$langs->trans("Type").'</td>';
     print '<td>'.$langs->trans("Parameters").'</td>';
@@ -264,7 +267,7 @@ if ($action == 'create_updater' || $action == 'edit_updater') {
     print '<br><table summary="listofattributes" class="border centpercent">';
     //Code
     print '<tr>';
-    print '<td class="fieldrequired">'.$langs->trans("Code").'</td><td>';
+    print '<td class="fieldrequired">'.$langs->trans("VariableToUpdate").'</td><td>';
     $globals_list = array();
     foreach ($price_globals->listGlobalVariables() as $entry) {
         $globals_list[$entry->id]=$entry->code;