Update Multiple Records help...

Background here is a search which returns a list of people, and from there allowing the site owner to email them using UE.

I have it all working in a couple of scenarios, but have a problem with one I am trying to finish off. The search works, and I should be able to use the same page for the email, so that part all works.

The little part that isn't is the updating the records returned in the search results - there's a field EmailList which just needs to be updated from N to Y for each of the search results. I've gotten as far as it updating one single record - if the results are ordered by Candidates.CandidateID ASC it will update the record with the highest ID.

I've attached the results page with the submit to same page form that should trigger the multiple update. If anyone could have a quick look I'd really appreciate it.

Thanks.