I have a data from sensor constantly inputting 0 (off) and 1(on) to turn on and off a note, but since the metro constantly refreshes when the sensor data is either 1 and 0, it always bangs a note so when I touch the sensor it constantly beeps/bangs a note in the frequency of my metro instead of just play it once. I have been turning my head upside down, but couldnt find a simple way to solve this one, any help is appreciated!

metro-always-bangs-even-when-the-value-changed-is-the-same

put a [change] after [serial], or a [zl change] after [zl group].

Ah, change! thank you very much! I am new to Max.

Metro always bangs even when the value changed is the same