diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index beeb60394c3..44c4154a038 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -1199,7 +1199,8 @@ function pdf_getlinenum($object,$i,$outputlangs,$hidedetails=0)
 		if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 		$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 		$action='';
-		return $hookmanager->executeHooks('pdf_getlinenum',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		$reshook = $hookmanager->executeHooks('pdf_getlinenum',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		return $hookmanager->resPrint;
 	}
 	else
 	{
@@ -1227,7 +1228,8 @@ function pdf_getlineref($object,$i,$outputlangs,$hidedetails=0)
 		if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 		$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 		$action='';
-		return $hookmanager->executeHooks('pdf_getlineref',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		$reshook = $hookmanager->executeHooks('pdf_getlineref',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		return $hookmanager->resPrint;
 	}
 	else
 	{
@@ -1254,7 +1256,8 @@ function pdf_getlineref_supplier($object,$i,$outputlangs,$hidedetails=0)
 		if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 		$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 		$action='';
-		return $hookmanager->executeHooks('pdf_getlineref_supplier',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		$reshook = $hookmanager->executeHooks('pdf_getlineref_supplier',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		return $hookmanager->resPrint;
 	}
 	else
 	{
@@ -1281,7 +1284,8 @@ function pdf_getlinevatrate($object,$i,$outputlangs,$hidedetails=0)
 		if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 		$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 		$action='';
-		return $hookmanager->executeHooks('pdf_getlinevatrate',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		$reshook = $hookmanager->executeHooks('pdf_getlinevatrate',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		return $hookmanager->resPrint;
 	}
 	else
 	{
@@ -1311,7 +1315,8 @@ function pdf_getlineupexcltax($object,$i,$outputlangs,$hidedetails=0)
 		if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 		$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 		$action='';
-		return $hookmanager->executeHooks('pdf_getlineupexcltax',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		$reshook = $hookmanager->executeHooks('pdf_getlineupexcltax',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		return $hookmanager->resPrint;
 	}
 	else
 	{
@@ -1338,7 +1343,8 @@ function pdf_getlineupwithtax($object,$i,$outputlangs,$hidedetails=0)
 		if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 		$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 		$action='';
-		return $hookmanager->executeHooks('pdf_getlineupwithtax',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		$reshook = $hookmanager->executeHooks('pdf_getlineupwithtax',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+		return $hookmanager->resPrint;
 	}
 	else
 	{
@@ -1367,7 +1373,8 @@ function pdf_getlineqty($object,$i,$outputlangs,$hidedetails=0)
 			if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 			$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 			$action='';
-			return $hookmanager->executeHooks('pdf_getlineqty',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlineqty',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		}
 		else
 		{
@@ -1397,7 +1404,8 @@ function pdf_getlineqty_asked($object,$i,$outputlangs,$hidedetails=0)
 			if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 			$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 			$action='';
-			return $hookmanager->executeHooks('pdf_getlineqty_asked',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlineqty_asked',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		}
 		else
 		{
@@ -1427,7 +1435,8 @@ function pdf_getlineqty_shipped($object,$i,$outputlangs,$hidedetails=0)
 			if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 			$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 			$action='';
-			return $hookmanager->executeHooks('pdf_getlineqty_shipped',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlineqty_shipped',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		}
 		else
 		{
@@ -1457,7 +1466,8 @@ function pdf_getlineqty_keeptoship($object,$i,$outputlangs,$hidedetails=0)
 			if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 			$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 			$action='';
-			return $hookmanager->executeHooks('pdf_getlineqty_keeptoship',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlineqty_keeptoship',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		}
 		else
 		{
@@ -1492,7 +1502,8 @@ function pdf_getlineunit($object, $i, $outputlangs, $hidedetails = 0, $hookmanag
 				'special_code' => $special_code
 			);
 			$action = '';
-			return $hookmanager->executeHooks('pdf_getlineunit', $parameters, $object, $action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlineunit', $parameters, $object, $action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		} else {
 			if (empty($hidedetails) || $hidedetails > 1) {
 				return $langs->transnoentitiesnoconv($object->lines[$i]->getLabelOfUnit('short'));
@@ -1525,7 +1536,8 @@ function pdf_getlineremisepercent($object,$i,$outputlangs,$hidedetails=0)
 			if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 			$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 			$action='';
-			return $hookmanager->executeHooks('pdf_getlineremisepercent',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlineremisepercent',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		}
 		else
 		{
@@ -1552,7 +1564,8 @@ function pdf_getlineprogress($object, $i, $outputlangs, $hidedetails = 0, $hookm
 			if (!empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 			$parameters = array('i' => $i, 'outputlangs' => $outputlangs, 'hidedetails' => $hidedetails, 'special_code' => $special_code);
 			$action = '';
-			return $hookmanager->executeHooks('pdf_getlineprogress', $parameters, $object, $action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlineprogress', $parameters, $object, $action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		} else {
 			if (empty($hidedetails) || $hidedetails > 1) return $object->lines[$i]->situation_percent . '%';
 		}
@@ -1587,7 +1600,8 @@ function pdf_getlinetotalexcltax($object,$i,$outputlangs,$hidedetails=0)
 			if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 			$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 			$action='';
-			return $hookmanager->executeHooks('pdf_getlinetotalexcltax',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlinetotalexcltax',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		}
 		else
 		{
@@ -1622,7 +1636,8 @@ function pdf_getlinetotalwithtax($object,$i,$outputlangs,$hidedetails=0)
 			if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 			$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 			$action='';
-			return $hookmanager->executeHooks('pdf_getlinetotalwithtax',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			$reshook = $hookmanager->executeHooks('pdf_getlinetotalwithtax',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+			return $hookmanager->resPrint;
 		}
 		else
 		{
@@ -1662,7 +1677,8 @@ function pdf_getTotalQty($object,$type,$outputlangs)
 				if (! empty($object->lines[$i]->fk_parent_line)) $special_code = $object->getSpecialCode($object->lines[$i]->fk_parent_line);
 				$parameters = array('i'=>$i,'outputlangs'=>$outputlangs,'hidedetails'=>$hidedetails,'special_code'=>$special_code);
 				$action='';
-				return $hookmanager->executeHooks('pdf_getTotalQty',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+				$reshook = $hookmanager->executeHooks('pdf_getTotalQty',$parameters,$object,$action);    // Note that $action and $object may have been modified by some hooks
+				return $hookmanager->resPrint;
 			}
 			else if ($type==0 && $object->lines[$i]->product_type == 0)
 			{