What is the proper way to activate a trigger in multiplayer?

[BlackbirdSD 15]

I currently have a trigger that surrounds a radio tower and when me or my friend get near it, a message will appear that says " Chopper inbound".  The problem is we don't see each others message and it only seems to trigger if we both go near the tower. 

In the trigger I have 

Type None

Activation Anybody

Activation type Present

Condition player in thisList;

 

What do I need to change?

 

 

 

[pierremgi 4768]

player is something local. Try anyPlayer present instead.

[BlackbirdSD 15]

Thanks