hi Clay,
I tried it, but i dont think repeating table can read the datasource that i connected to SharePoint List.
I have a list in SharePoint. that list have been connected to Multiple Selection List box. and the item in list would be showed

I have another check box with the name is "validate".
I want to check some value in Multiple selection listbox, ex : check 1,2,3 , and checkbox "validate" auto checked, when i uncheck 1 or 2 or 3, the checkbox "validate" auto unchecked.
That's my probs.
I look forward to hearing from you. :)
thks so much :)