public function getValueOnUpdate()
    {
        if ($this->valueOnUpdate !== null)
            return $this->getSqlValue(Expression::evaluateExpression($this->valueOnUpdate, $this->getDataObj()));
        return "";
    }
public function getValueOnUpdate()
    {
        if ($this->valueOnUpdate !== null)
            return $this->getSqlValue(Expression::evaluateExpression($this->valueOnUpdate, $this->getDataObj()));
        return "";
    }
public function getValueOnUpdate ( ) { if ( $ this -> valueOnUpdate !== null ) return $ this -> getSqlValue ( Expression :: evaluateExpression ( $ this -> valueOnUpdate , $ this -> getDataObj ( ) ) ) ; return "" ; }
Get the value when a record is updated

@return mixed the value of the field
Get the value when a record is updated