Set a Trigger that works on ALL windows of an application

I am trying to get Preview to automatically snap to 2/3 of the screen every time I open a PDF. I tried doing it using automation with 'specific app did activate' but it only works when I'm launching the app the very first time. If I open any other PDF it doesn't work. Below is the screenshot of my set up.

Can anyone suggest how can I go about doing it thank you!