Custom Call Back Function to Update Global Filter SUBNM

We have a UX dashboard that interacts with other AWS components (an SQS Queue to be precise). When a user clicks the generate button (1) a TI is run that generates a bunch of JSON based requests that get sent off to another system. That TI also updates a dimension (2).

Users then watch the dashboard for updates to that request ID and make some decisions based on the outcome.

We would like the TI call back function on success to refresh the SUBNM (1) and change the filter selection to latest one created (last item in the list). I can’t seem to figure out how to get a callback function from the process to interact with the pages filters. Does anyone have an example set of code to get me started.