You need to go to the progress bar in UMG and create a bind function for the progress value. The return value needs to be a value between 0.0 to 1.0, so you need to get your current number of coins and divide it with the maximum (which is 100).
You need to go to the progress bar in UMG and create a bind function for the progress value. The return value needs to be a value between 0.0 to 1.0, so you need to get your current number of coins and divide it with the maximum (which is 100).