diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index a79f01d6ed8e4a1798cf67e67cb577013a130aac..b32aa8cca0546738ff5fca6c62eea0e0237f0033 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -4294,7 +4294,7 @@ abstract class CommonObject
               			}
                			elseif ($value=='')
                			{
-               				$this->array_options[$key] = null;
+               				$new_array_options[$key] = null;
                			}
              			break;
              		/*case 'select':	// Not required, we chosed value='0' for undefined values
@@ -4304,13 +4304,13 @@ abstract class CommonObject
              			}
              			break;*/
             		case 'price':
-            			$this->array_options[$key] = price2num($this->array_options[$key]);
+            			$new_array_options[$key] = price2num($this->array_options[$key]);
             			break;
             		case 'date':
-            			$this->array_options[$key]=$this->db->idate($this->array_options[$key]);
+            			$new_array_options[$key] = $this->db->idate($this->array_options[$key]);
             			break;
             		case 'datetime':
-            			$this->array_options[$key]=$this->db->idate($this->array_options[$key]);
+            			$new_array_options[$key] = $this->db->idate($this->array_options[$key]);
             			break;
            			case 'link':
 						$param_list=array_keys($attributeParam ['options']);
@@ -4326,7 +4326,7 @@ abstract class CommonObject
     							if (is_numeric($value)) $res=$object->fetch($value);
 								else $res=$object->fetch('',$value);
 
-    							if ($res > 0) $this->array_options[$key]=$object->id;
+    							if ($res > 0) $new_array_options[$key]=$object->id;
     							else
     							{
     							    $this->error="Ref '".$value."' for object '".$object->element."' not found";
@@ -4366,9 +4366,9 @@ abstract class CommonObject
                 // Add field o fattribut
             	if($extrafields->attribute_type[$attributeKey] != 'separate') // Only for other type of separate)
             	{
-	                if ($this->array_options[$key] != '')
+	                if ($new_array_options[$key] != '')
 	                {
-	                    $sql.=",'".$this->db->escape($this->array_options[$key])."'";
+	                    $sql.=",'".$this->db->escape($new_array_options[$key])."'";
 	                }
 	                else
 	                {