My buzzer is not working for varying intensity project

positive is connect to 0
negative is connected gnd ,my interface is working but my buzzer is not resonding to my commands

could you please tell me what are you doing with your project. And aslo provide me the code lets check is there any error in your coding part.

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thank you there was a connection error

Actual problem if you want to control your budget intensity then you need to connect it with and along output pin

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