i made a little video to show what happen
https://drive.google.com/file/d/1KFYg3QhPMVdabZHaG8O31-gkSkDl1HSY/view?usp=shari...
Viewing post in [Solved] Help setup live room
If you are live-coding a Create event, the new version will only take effect the next time the instance is created - otherwise GMLive would have to figure out which variables were added/renamed/removed, which is a whole different can of worms, moreso if you have conditions/loops inside the event. You can force-execute create event from Step via event_perform(ev_create, 0)