Is there a way to check the dimension ID of a player

I am working on a teleporter that will teleport the player into the End if they are in the overworld, and tp them to the overworld if they are in the end. I was looking through all of the blocks, and I haven't been able to find one that checks the dimension of the player. I have been messing around with the get dimension ID of provided world, but I cannot get that to work. Any possible way to fix that?