Override Lookup of form control.

[ExtensionOf(formStr(VendEditInvoice))] final class XXX_VendEditInvoice_Extension { public void overridePaymSpecLookup(FormStringControl _formControl) { SysTableLookup sysTableLookup = SysTableLookup::newParameters(tableNum(VendPaymModeSpec), _formControl); Query query = new Query(); QueryBuildDataSource queryBuildDataSource; VendInvoiceInfoTable vendInvoiceInfoTable = _formControl.formRun().dataSource().cursor() as VendInvoiceInfoTable; queryBuildDataSource = query.addDataSource(tableNum(VendPaymModeSpec)); queryBuildDataSource.addRange(fieldNum(VendPaymModeSpec, PaymMode)).value(queryValue(vendInvoiceInfoTable.PaymMode)); sysTableLookup.addLookupfield(fieldNum(VendPaymModeSpec, Specification)); sysTableLookup.addLookupfield(fieldNum(VendPaymModeSpec, PaymMode)); sysTableLookup.addLookupfield(fieldNum(VendPaymModeSpec, Name)); sysTableLookup.parmQuery(query); sysTableLookup.performFormLookup(); } public void init() { next init(); PaymentInvoice_PaymSpec.registerOverrideMethod(methodStr(FormDataObject, lookup), formMethodStr(VendEditInvoice, overridePaymSpecLookup)); } }