JumpRef() on unbound control in D365FO

class CGLProcCategoryHierarchyManagementFormEventHandler

{

    /// <summary>

    ///

    /// </summary>

    /// <param name="sender"></param>

    /// <param name="e"></param>

    [FormDataSourceEventHandler(formDataSourceStr(ProcCategoryHierarchyManagement, EcoResCategory), FormDataSourceEventType::Initialized)]

    public static void EcoResCategory_OnInitialized(FormDataSource sender, FormDataSourceEventArgs e)

    {

        FormRun           formRun = sender.formRun();

        EcoResCategory    ecoResCategory = sender.cursor();

        FormStringControl budgetManager  = formRun.control(formRun.controlId('CGLBudgetManager'));

        var overrides = CGLProcCategoryHierarchyManagementFormEventHandler::construct();

       

        budgetManager.registerOverrideMethod(methodStr(FormStringControl, jumpRef),    methodStr(CGLProcCategoryHierarchyManagementFormEventHandler, budgetManager_OnJumpRef), overrides);

    }

    public static CGLProcCategoryHierarchyManagementFormEventHandler construct()

    {

        return new CGLProcCategoryHierarchyManagementFormEventHandler();

    }

    public void budgetManager_OnJumpRef(FormStringControl _targetField)

    {

        Args            args;

        MenuFunction    menuFunction;

        HcmWorker       hcmWorker;

        DirPerson       person;

        DirPartyTable   partyTable;

   

        if (_targetField.valueStr() != "")

        {

            menuFunction = new MenuFunction(menuitemDisplayStr("hcmWorker"), MenuItemType::Display);

            args = new Args(menuFunction.object());

          

            select hcmWorker

                join recid from person

                    where hcmWorker.Person == person.RecId

                join recid from partyTable

                    where person.recid == partyTable.recid

                        &&partyTable.Name == _targetField.valueStr();

            if (hcmWorker.RecId != 0)

            {

                args.record(hcmWorker);

                args.lookupRecord(hcmWorker);

                menuFunction.run(args);

            }

          

        }

    }

}