Hey there!
Here is a different approach for your progress bar.
The idea is using an animation in the Widget.
You make the animation of the progress bar going from 1 to 0 in 1 second.
Then you have a float ‘total time’ and use that float as a multiplyer of
the animation playback speed.
At the end of the animation you can put an event track that triggers
when time is out 
Here is a video showing you what I mean.
Hope it helps!
Cya
Dany
