Modifying the 3 Level ZZ Semafor Indicator

 

Does anyone have a Level 3 ZZ Semafor Indicator modified ? or able to modify one so that it will only give an alert when the yellow 3 has appeared. Im not interested in seeing the number 1 and 2 Semafor's. I would like for them to be taken out all together.

 
Since the server is not working today, I have not checked the operation, but maybe it works as you like.
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