CCrmGridOptions::AddVisibleColumn

public function AddVisibleColumn($gridID, $columnName)
{
	if($gridID == '' || $columnName == '')
	{
		return false;
	}

	$item = new CCrmGridOptions($gridID);
	$columns = $item->GetVisibleColumns();
	if(empty($columns) || in_array($columnName, $columns, true))
	{
		return false;
	}

	$columns[] = $columnName;
	$item->SetVisibleColumns($columns);
	return true;
}