public function updateColumn($columnId, $key, $value)
    {
        if (isset($this->_columns[$columnId]) && $this->_columns[$columnId] instanceof Varien_Object) {
            $this->_columns[$columnId]->setData($key, $value);
        }

        return $this;
    }
public function updateColumn($columnId, $key, $value)
    {
        if (isset($this->_columns[$columnId]) && $this->_columns[$columnId] instanceof Varien_Object) {
            $this->_columns[$columnId]->setData($key, $value);
        }

        return $this;
    }
public function updateColumn ( $ columnId , $ key , $ value ) { if ( isset ( $ this -> _columns [ $ columnId ] ) && $ this -> _columns [ $ columnId ] instanceof Varien_Object ) { $ this -> _columns [ $ columnId ] -> setData ( $ key , $ value ) ; } return $ this ; }
Modify grid column

@param $columnId
@param $key
@param $value

@return $this
Modify grid column