Problem With Sting Passing

Im trying to pass a string from my view class that tells the second object in a collision.

I’ve gotten as far as the function in my CollisionController class CollisionCatcher()

it reads like this

public function collisionCatcher(colObj:String)
		{
			trace ("collisionController colObj= "+colObj);
			if(colObj== "object Rocks")
			{
				trace("collisionValueTrue");
				_model.yVel=_model.yVel*-1;
			}
		}

the trace produces this:

collisionController colObj= [object Rocks]

but i still can’t get to the “collisionValueTrue” trace

can anyone see the problem??