Refresh Caller form data source in AX 2012

Refresh Caller form data source:
Parent Form: POCVehicleForm
Child Form: POCInsurenceMaster

Write below code snippet on click method of button on POCVehicleForm

void clicked()
{
    MenuFunction        mf;
    Args                        args;
    ;

    args= new Args();
    args.record(POCVehicle);

    mf=new MenuFunction(identifierStr(POCInsurenceMaster), MenuItemType::Display);
    mf.run(args);
}

Overwrite below method on POCInsurenceMaster:

 public void closeOk()

    {

        #Task

        FormRun formRun;

        super();

        // Buffer of calling form.

        formRun = element.args().caller();

        // Check if caller is form

        if(formRun)

        {

            formRun.task(#taskF5);

        }

    }

Open POCInsurenceMaster from POCVehicleForm and once update record and close child form then parent form will be refreshed.