I'm semi-proficient with HTML Prompts, having used them in several macros. But I'm trying to figure out something that seems it should be simple, but I can't get it: I want to update an HTML prompt with the value of a variable over time: When the variable changes, I want to update the window.
I found a very promising thread here:
User chazwhiz even posted a screenshot of code that was implied to work. I've attached my version of the code here, as it's just a screenshot in the other thread:
The [Custom HTML Prompt] action will wait for the window to complete before continuing unless you turn on Asynchronously (v8+) in the gear menu.
So your macro was simply never reaching the loop.