[SOLVED] Multiplayer - deleting a code-created object

Hi everyone!
I’m experimenting with multiplayer and I’m stuck!

It is a top-viewed 2D game. My characters are ships and they need to go to specific spots on the map. Once there, I’d like a message to appear on every player’s screen. When the said ship leaves the spot, I’d like the message to disappear. Nothing alarmingly difficult, I told myself!
I’ve messed up a lot with my code those past few hours to make it work. But I couldn’t!
It works when there is only one player (the message appears and disappears) but doesn’t with two players (which defeats my multiplayer intentions!).
The message (“DMW_Warning” in the code) has the multiplayer behaviour.

Could you put me on the right track?

Thanks!

I think the problem comes from the deletion process and probably a matter of ownership but I can’t figure it out yet!

Ok, I figured it out at last!
For those whom that may be interested :