I can't fix this

When you walk into the Green Slime in the cave, he’s supposed to take you to the second slime fight area, but instead he just dies, and the collision doesn’t work.
Here’s my game- https://flowlab.io/game/play/1391363
The code is in the Player MAP object

It looks like it works for how its set up.
Instead if Collision --> Destroy, message the enemy to destroy when the player gets sent to the next level.
So the Slime is Mailbox --> Destroy instead.