Hi markih0308ny4n5i, welcome to Thunkable! 
If you have not already, check out our Docs for creating a timer.
Can you share the blocks you’re using to do this or link to the project so the Community can take a look?
Be sure to check out How to ask Great Questions v2.0, the Community Guidelines, and our Getting Started Guide to make the best of your Thunkable Community experience!