problem trigger unity 4.3

I have a problem with the trigger enter. I put 2 collider, one of the main object and the second object. I popped “trigger” on the principal. But it does not work. I do not know where I’m wrong. This is a screen with code

   function OnTriggerEnter(other:Collider)
     {
         print("Ok");
     
     
     }

1465618--80266--$trig.png

I noticed that the trigger does not work if I move the object. that is, I lastiera move through the object in the trigger area. When it does not work like never before?

Try putting a Rigidbody on one of the colliders.

At the bottom of the reference page for Box Colliders, there is a chart that shows what kind of colliders send what Trigger and Collision messages.