Go To Main Table on Custom Field On Form

While customizing some of the forms in Dynamics Ax 2009 i come across to create a "Go To Main Table" functionality on the custom field placed on the form.
To Execute this i used following code at the design part (field>> methods>>jumpref method)

Code :

public void jumpRef()
{
    Args        args;
    FormRun     fr;
    ;

    args = new Args(formstr(SheCRTermMaster)); //TableName
    args.lookupField(fieldNum(SheCRTermMaster, TermID)); //Fields of Table
    args.lookupField(fieldNum(SheCRTermMaster, Description));
    args.lookupValue(this.text()); //Optional

    fr = ClassFactory.FormRunClass(args);
    fr.init();
    fr.run();
    fr.detach();
}