Well... I haven't made much progress yet. Looking at other mods I had noticed the usage of parenthesis to evaluate the value of things instead of reading them as text, so I tried adding parenthesis around parent.FilterDropdown.OnSelect hoping it would trigger the OnSelect event making the game think that it was changed by hand and thus possibly causing it to re-apply the filter. It didn't work.
Has anyone found any way to programmatically trigger an event like this from another event? (e.g. When the OnPress event of my button is triggered it triggers the OnSelect event of the dropdown.)
Also, When searching the forums here, I found
this old thread with a bunch of interesting discoveries. Are there any more tidbits on the syntax of these action scripts available anywhere? I haven't seen any yet.