It is hard to tell by just looking at the event handler. We need a bit more context to be able to help you achieve what you are trying to do.
- When you say: "The screen capture below shows something I added in the Success handler off an app." Is this a success event handler for a query?
- Is
@ia variable defined within your query or outside of it? - What part of the previous post were you not able to follow?
Are you able to join us in Office Hours today or Thursday? It may be easier if we get to see you whole app.