diff --git a/app/code/community/BL/CustomGrid/Block/Widget/Grid/Columns/Editor.php b/app/code/community/BL/CustomGrid/Block/Widget/Grid/Columns/Editor.php
index 61d5b45..3d3c3ca 100644
--- a/app/code/community/BL/CustomGrid/Block/Widget/Grid/Columns/Editor.php
+++ b/app/code/community/BL/CustomGrid/Block/Widget/Grid/Columns/Editor.php
@@ -68,7 +68,7 @@ public function getRowsJsonConfig()
         return Mage::helper('core')->jsonEncode($config);
     }
     
-    protected function _getBlockSortedColumns($block)
+    protected function _getBlockSortedColumns($block, $sorted = true)
     {
         // Get block columns, sort them if needed
         $columns = $block->getColumns();
diff --git a/app/code/community/BL/CustomGrid/Helper/Data.php b/app/code/community/BL/CustomGrid/Helper/Data.php
index fcf9de8..d53851f 100644
--- a/app/code/community/BL/CustomGrid/Helper/Data.php
+++ b/app/code/community/BL/CustomGrid/Helper/Data.php
@@ -33,20 +33,18 @@ protected function _parseIntValue($value)
     public function parseCsvIntArray($string, $unique=true, $sorted=false, $min=null, $max=null)
     {
         $values = array_map(array($this, '_parseIntValue'), explode(',', $string));
-        $filterCodes = array('!is_null($v)');
         
         if ($unique) {
             $values = array_unique($values);
         }
-        if (!is_null($min)) {
-            $filterCodes[] = '($v >= '.intval($min).')';
-        }
-        if (!is_null($max)) {
-            $filterCodes[] = '($v <= '.intval($max).')';
-        }
-        
-        $filterCode = 'return ('.implode(' && ', $filterCodes).');';
-        $values = array_filter($values, create_function('$v', $filterCode));
+
+        $_filterCsvInt = function($v) use ($min, $max) {
+            return !is_null($v)
+            && (is_null($min) || $v >= intval($min))
+            && (is_null($max) || $v <= intval($max));
+        };
+
+        $values = array_filter($values, $_filterCsvInt);
         
         if ($sorted) {
             sort($values, SORT_NUMERIC);
diff --git a/app/code/community/BL/CustomGrid/Model/Grid/Type/Abstract.php b/app/code/community/BL/CustomGrid/Model/Grid/Type/Abstract.php
index a72e482..c3946e5 100644
--- a/app/code/community/BL/CustomGrid/Model/Grid/Type/Abstract.php
+++ b/app/code/community/BL/CustomGrid/Model/Grid/Type/Abstract.php
@@ -327,6 +327,10 @@ protected function _getCustomColumns()
                 'response'   => $response,
                 'type_model' => $this,
             ));
+
+            $filterCallback = function($m) {
+                return ($m instanceof BL_CustomGrid_Model_Custom_Column_Abstract); 
+            };
             
             $this->_customColumns = array_filter(
                 array_merge(
@@ -334,7 +338,7 @@ protected function _getCustomColumns()
                     $xmlColumns,
                     $response->getColumns()
                 ),
-                create_function('$m', 'return ($m instanceof BL_CustomGrid_Model_Custom_Column_Abstract);')
+                $filterCallback
             );
             
             uasort($this->_customColumns, array($this, '_sortCustomColumns'));