Hello! I was able to get this working with similar visual logic.

I used a "Greater Than" block, set the base to 10, and placed a pause block at frame 10 on the scene director. Take online to ready it, the scene will wait in a paused state, take again to start the countdown. I have attached a copy of the scene for you to take a look at inside of XPression. File > Import > From Project/File.
Let me know if this gives you any trouble! There is another solution using very simple scripting and a clock timer widget if this visual logic continues to give you a hard time.
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Brishen Thompson
Demonstration Artist & Trainer - Generalist
Ross Video
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