I set the arm so it stays up but I can’t get it to lower

I set the arm so that it stops so it resist rotation and stays raised as we move forward. I need it to lower and raise up so that It can flip a cap. I set torque 100 percent and tried moving 90 degrees. I also tried moving forward. I am stumped. Can anyone help. We are in the modkit blockley.

may we see the code?

We would need to see the code to understand what the problem is.