Hey Phil,
Let’s see if this helps you. I mocked up a quick sample of a dynamic repeat within a checkbox group, that feeds another server connect as a GET parameter (list).
Make sure the checkbox input is setup to be an array by placing a left square bracket, then a right square bracket (looks like a vertical rectangle below:
The server connect to be filtered points back to the form group value:
The server connect query is used by referencing the name of the input box and mark as multiple:
And the query splits by comma:
{{$_GET.weeknum.split(",")}}
I think that’s it…it looks like you are close, but maybe a detail from above will help.
–Ken