Hello Clay,
Thank you very much for your prompt help!
In my other ACL script, I used XUI dialog box for the items that had been determined ahead of time. But for the dynamic items (e.g. file #1 could have "A", "B", and "C" items and file #2 could have "D", and "E"), it seems to be a little challenging! That's why I'd like to find other alternatives. BTW, I always used readvar() for radio button, and didn't realize that it could be used for check box too! Thanks again for the tip you sent to me. I really appreciate it.
Best,
Jing