I think you have to access the selected documents using an action in the embedded view with the LotusScript logic inside the acrtion instead of calling agents. You can find a complete answer here (with full explanation and code sample):
Domino Designer: Access selected rows from embedded view
I am not sure if this IBM TechNote explains exactly the same issue, but it seems very similar: How to get a handle on selected documents in an embedded view when using LotusScript