Switch between multiple sends to use as guitar channel switcher

Hello,

In Logic (and Mainstage) I have a guitar channel with 3 sends that are going to delays.

Ideally I'd like to have it set up so that when I turn on one of the three sends, the other two are bypassed automatically. I'd like to map each send to an external controller so that when one of the sends is activated, the other two sends are bypassed. This way it would essentially function as a channel switcher. The reason I'd like to do this is so I can switch through the various delay sends without having multiple sends on at the same time.

I couldn't find a way of having do this automatically via a key command, so I started looking into using control surface assignments or smart controls.

My hope was to set up Smart Controls so that when a send is turned on, a signal goes to the other two sends to turn off. From what I can tell, a smart control can only send one midi message at a time. (Correct me if I'm wrong).

I then tried using controller commands to accomplish this, but I didn't have success. From what I can tell a controller assignment can only perform one function (correct me if I'm wrong.)

I was thinking I could possibly find an external midi controller that will send multiple midi messages at once, but I'm a bit confused regarding how to set that up, or if that would even solve my problem.

If anyone has any suggestions I would appreciate it greatly!