    $res = $this -> getRowById($CollectionID , $EditID);
	$UserName 		= $SubmittedData['Collection_1_1'];
	$OldUserName = $res['Collection_1_1'];
		
	$res = $this -> getRowsByColValue($CollectionID , 1 , $UserName);
	
	if ($UserName == $OldUserName)
	{
		//do nothing
	}
	else
	{
		if (count($res) > 0)
		{
			$ruleErrors[] = "Username ".$UserName." is already taken" ;
		}	
	}