Logic Pro X - Change channel output to specific bus

Hi all

I'm trying to create a script that will automatically route a channel to a specific bus. Whether it's an audio channel, software instrument or auxiliary etc.

I'm using "Open Popup Menu from Element". The issue seems to be that the order of UI elements is different for audio tracks and instrument tracks so the same script can't work for both. Is there a way to click different UI Element depending on whether it's an audio track or instrument track?

Thanks for any help!!

Alex