CreateClass

    int                         id;
    boolean                     ret;
    Array                       errArray = new Array(Types::String);
    str                         className;
    className   = "mbsEBErrChk" + enum2str(mDocType);
    id          = dict.className2Id(className);
    obj         = classFactory.createClass(id);
    if (obj)
    {
        obj.setmDocDir(mDocDir);
        obj.setmDocType(mDocType);
        obj.setTPId(TPId);
        obj.setUpdate(updateRec);
        if (partner)
        {
            obj.SetPartner(partner);
        }
        if (partnerType)
        {
            obj.SetPartnerType(partnerType);
        }
       numErrors   = obj.checkError(mDoc, writeErrRec, _showTiming);
    }

Lookup and Query Range

public void lookupHCMtable(FormStringControl _ctrl)
{
    SysTableLookup              sysTableLookup = SysTableLookup::newParameters(tablenum(hcmtable), _ctrl);
    Query                       query = new Query();
    QueryBuildDataSource        queryBuildDataSource;
    QueryBuildRange             queryBuildRange;
    ;
    sysTableLookup.addLookupfield(fieldnum(hcmtable, EmpId));
    sysTableLookup.addLookupfield(fieldnum(hcmtable, EmpName));
    queryBuildDataSource = query.addDataSource(tablenum(hcmtable));
    queryBuildRange = queryBuildDataSource.addRange(fieldnum(hcmtable, Lastdateworked));
    queryBuildRange.value(strFmt('(Lastdateworked > %1)', today()));
    sysTableLookup.parmQuery(query);
    sysTableLookup.performFormLookup();
}