Grabbing %client from %obj

Alright, While I know %client and %obj are just variables like any other, but what I wanted to know is how do you grab the %client variable from the %obj variable assuming %obj is the same as %client.player. How do I grab the %client from the %client.player since I am not given direct access to it.

function Chest::onPickup(%this, %obj, %shape, %amount)
{
   //overridden function from Weapon::OnPickup. Will be able to pick up chest 

  %client = %obj.client; // <-doesn't work
OR
  %client = %obj.Parent; //<-also doesn't work, tried each of these

   echo("ONPICKUP: " @ %client.pickupChest); // <- Doesn't work regardless of which one above i tried
   if(%client.pickupChest == 1)
   {
      Parent::onPickup(%this, %obj, %shape, %amount);
         commandToServer('changePOV',0);
         commandToServer('use',"Chest"); 
   }
}
function Chest::onCollision(%this,%obj,%col, %shape)
{
   echo("Chest:OnCollision");
   // Collision with other objects, including items   
   %client = %col.client; <-works
   echo("CLIENT: " @ %client.pickupChest); //<-works
   if(!%client)   
   {      
   	return;
   }     
}

I am not calling the %client in the same way in both of these functions. Ones going through %col the other from %obj. If ANYONE has an idea on how in the heck to grab the %client please let me know.