Hi rishdeo15zw6434, welcome to Thunkable!
Be sure to check out our posts about How to ask Great Questions v2.0, our Community Guidelines, and our Docs as you get started.
Without more context, my suggestion would be to do some debuging on the function with your timer. Our Power Thunker Tatian has a wonderful tutorial about debugging in Thunkable that would be very helpful here. Take a look and see what you can find!