Form where testing if radiobuttonlist is null and then display message

Question

I created a test form to try to get this work and can't seem to make it work. In my form I have a ddlist on page 1. on page 2 I have a subform that the selection in the ddl makes visible--that's working.
There is a radiobuttonlist in the subform. I'd like to check on the submit button if ddl == 2 and radiobuttonlist == null then display a message. Here is my script:
//Create a variable to hold the document object
var 
v3 = form1.page1.division.rawValue;
var 
v15 = form1.page2.pcEquip.dirAbove.RadioButtonList.rawValue;　 
if 
((v3 == 2) && (v15 == null)) {
xfa.host.messageBox( "Please indicate whether the associate is a director or above" );
xfa.host.setFocus("form1.page2.pcEquip.dirAbove.RadioButtonList");
else 
Button3.execEvent("click");
The script is finishing as desired with the email window, but doesn't catch that the radiobuttonlist is null. Any help would be appreciated.
Thanks,
MDawn

Answer 1

Hi,
Test the radio button exclusion group against an emply string. For example:
if (v15 == "")
     // your script here.
Hope that helps,
Niall