What object is passed to a trigger?

#1 How are you assigning the variable to the player? I am a little rusty on triggers, but you should have full access to the client that enters the trigger by using %obj.client. For example, I found a bit of code here on the forums that send a message to the ChatHud when a player enters the trigger.

datablock TriggerData(DungeonTrigger)
{
   tickPeriodMS = 100;
};

function DungeonTrigger::onEnterTrigger(%this,%trigger,%obj)
{
   
   Parent::onEnterTrigger(%this,%trigger,%obj);
   %name = %obj.client.namebase;     
   if (%obj.client)
   messageClient(%obj.client, 'MsgDungeon', '\c0 %1 %2',%trigger.nameTag ,%name);

}

function DungeonTrigger::onLeaveTrigger(%this,%trigger,%obj)
{
   
   Parent::onLeaveTrigger(%this,%trigger,%obj);
   
}

function DungeonTrigger::onTickTrigger(%this,%trigger)
{
   
   Parent::onTickTrigger(%this,%trigger);
}

Hope this helps!

#2 That did help, I was able to store the value I wanted in the %client object and re-access it but what if I want an NPC to work with this trigger? Is this %client object accessible by an NPC? If not is it possible instead of storing the value in the %client object can I access a %player object associated with the %obj parameter?

This is why I'm wondering what the %obj parameter is. This is why I don't like typeless scripts...

#3 %obj is whatever object entered the trigger.
If you want to have an AI activate a trigger, you will have to do a check on what obj entered the trigger.
Is it a:
%player
%AI_player
%something else?
Then do something based on what %obj entered the trigger.

#4 All of which I believe will inherit from GameBase, is there a way to set a variable in this parent datablock that can be common to all? (I'm still learning torque scripting).

Thanks

#5 Trigger callbacks are invoked on the server, correct? Shouldn't you just be able to set %obj.someAttribute = 5;?