Ye, 2 minutes after I asked I tried negative numbers and saw the problem hahah. I added some logic to check if it's already negative and now attempt is passed too

What if you pass your code a negative number?

Try editing the "Example Test Case" to pass a negative number and see what happens. Does it still pass when you press the "Test" button?

It might help if you show the output if the test that is failing.

To be fair the actual problem here is to understand that you only need to replace a T for an U.