Index: trunk/core/kernel/kbase.php
===================================================================
diff -u -r8369 -r8428
--- trunk/core/kernel/kbase.php	(.../kbase.php)	(revision 8369)
+++ trunk/core/kernel/kbase.php	(.../kbase.php)	(revision 8428)
@@ -377,7 +377,7 @@
 
 		$this->ApplyFieldModifiers(); // should be called only after all fields definitions been set
 		$this->prepareConfigOptions(); // this should go last, but before setDefaultValues, order is significant!
-		
+
 		$this->SetDefaultValues($populate_ml_fields);
 	}
 
@@ -652,6 +652,18 @@
 	{
 		return false;
 	}
+
+	/**
+	 * Returns specified field value from all selected rows.
+	 * Don't affect current record index
+	 *
+	 * @param string $field
+	 * @return Array
+	 */
+	function GetCol($field)
+	{
+		return Array ();
+	}
 }
 
 ?>
\ No newline at end of file