I figured this out. I found the documentation a bit lacking here. Here are my findings:
1. This doesn't appear to work with a qSIListForm, only qSIListView
2. The Syntax is <ActionName>.OutParameter.<VariableName>.Value
Once I do this I am able to use the returned value as a Parameter in an HTTP string. So if the variable I have in my stored proceedure is @ScopeID, like above, and the ExecuteOpertaion name is "CreateER", then the syntax for the ResultFromAction would be "CreateER.OutParameter.ScopeID.Value".