[wojzeh]

следует использовать следующий код:

public static void wblLookup(Query _query, FormStringControl _ctrlIds, FormStringControl _ctrlStrs, container _selectField, queryRun _queryRun = null)
{
    SysLookupMultiSelectGrid    lookupMS = new SysLookupMultiSelectGrid();

    lookupMS.parmCallingControlId(_ctrlIds);
    lookupMS.parmCallingControlStr(_ctrlStrs);
    lookupMS.parmQuery(_query);
    lookupMS.parmQueryRun(_queryRun);
    if(_queryRun)
    // Begin: Alexey Voytsekhovskiy
    {
        lookupMS.parmQuery(_queryRun.query());
    }
    // End: Alexey Voytsekhovskiy
    lookupMS.parmSelectField(_selectField);
    lookupMS.run();
}

скуулу спасибо