Cannot pick up objects

I am new to Torque and I am trying modify the Emaga game from the 3DGPAI1. I have replaced the normal player with a hovertank. It is not a vehicle which the player has mounted, but rather the tank is the vehicle.
I think I have included all the necessary methods but the tank just runs thru the objects in the game and does not pick them up. Does anyone have any ideas? I am attaching the tank.cs file. Sorry if I did not attach it correctly.
-Ken

//-----------------------------------------------------------------------------
// And finally, this datablock describes the vehicle itself.
//-----------------------------------------------------------------------------
//**************************************************************
// VEHICLE CHARACTERISTICS
//**************************************************************

datablock HoverVehicleData(DefaultTank)
{
	spawnOffset = "0 0 1";
	floatingGravMag = 30; // 50.5
	catagory = "Vehicles";
	shapeFile = "~/data/models/avatars/human/Tank2.dts";
	computeCRC = true;
Other tank stuff here.};

function DefaultTank::create( %block )
{
    %obj = new HoverVehicle() 
    {
        dataBlock = %block;
    };

    return( %obj );
}

//============================================================================
// Avatar Datablock methods
//============================================================================

function DefaultTank::onAdd(%this,%obj)
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
{
   %obj.mountVehicle = false;

   // Default dynamic Avatar stats
   %obj.setRechargeRate(0.01);
   %obj.setRepairRate(%this.repairRate);
}

function DefaultTank::onRemove(%this, %obj)
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
{
   %client = %obj.client;
   if (%client.player == %obj)
   {
      %client.player = 0;
   }
}

function DefaultTank::onNewDataBlock(%this,%obj)
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
{
}


function DefaulTank::onCollision(%this,%obj,%col,%vec,%speed)
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
{
  %obj_state = %obj.getState();
  %col_className = %col.getClassName();
  %col_dblock_className = %col.getDataBlock().className;
  %colName = %col.getDataBlock().getName();

  if ( %obj_state $= "Dead")
    return;


  if (%col_className $= "Item" || %col_className $= "Weapon" ) // Deal with all items
  {
    %obj.pickup(%col);                     // otherwise, pick the item up
  }
  // Mount vehicles
  //%this = %col.getDataBlock();

  %pushForce = %obj.getDataBlock().pushForce;  // Try to push the object away
  if (!%pushForce)
     %pushForce = 20;
  %eye = %obj.getEyeVector();                   // Start with the shape's eye vector...
  %vec = vectorScale(%eye, %pushForce);
  %vec = vectorAdd(%vec,%obj.getVelocity());    // Add the shape's velocity
  %pos = %col.getPosition();                    // then push
  %vec    = getWords(%vec, 0, 1) @ " 0.0";
  %col.applyImpulse(%pos,%vec);
}