Need help with my charecter selector RIGHT NOW!

pls i need help trying to make a game but i cant figure this out

game link:

so what i need help with is when you press arrowL it switches the kiwi and the cat so you can select the cat as your character

i am trying to use mailboxes and messenger blocks but its not working

code is in kat, pl_ex and arrowL

Use globals and then just have it when you lick it has a router then spawns it.

could you put an image or no