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When Normal Room is 0, Then Duration(min) will increase by 10.
However, when Normal Room is "blank", Then Duration(min) will recount from 0 until Normal Room is NOT "blank".
However, I want to remain the count previously afterwards.
Just like the photo attached, when it detects Normal Room is "blank", it will overwrite and start recounting. But when it detects Normal Room is NOT "blank". , it will resume previously.
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