[S.Kuskov]

Ещё вот так можно:

anyType find(TableId TableId, RecId RecId, FieldId FieldId)
    {
        Query Query;
        QueryBuildDataSource qbds;
        QueryRun QueryRun;
        Common Common;
        anyType ret;
        ;

        Query = new Query();
        qbds = Query.addDataSource(TableId);
        qbds.addRange(fieldName2id(TableId, 'RecId')).value(queryvalue(RecId));
        qbds.addSelectionField(FieldId, SelectionField::Database);
        qbds.firstOnly(true);

        QueryRun = new QueryRun(Query);
        if (QueryRun.next())
        {
            Common = QueryRun.get(TableId);
            ret = Common.(fieldId);
        }

        return ret;
    }