What’s going on is the body object is a TileMap object. TileMap objects do not have a bounce() function declared in their class so it crashes.
The quick and dirty solution is:
To give you a more accurate solution I would need to know what object you want to bounce(). Do you want to bounce() the parent object of your topchecker object? If so change body.bounce() to get_parent().bounce().
That is part of my enemie script and its supposed to make my Player bounce. When I # the line I just hit the enemie without bouncing. I tried “get_parent().bounce()” and it didn’t work.
Update: i copied your code and modified it a bit and it works thank you so much!!