How to disable or destroy HingeJoint2D

I have a lamp that is hanging from the ceiling in my 2D game. It is connected with HingeJoint2D.

Somehow I need to disable the HingeJoint2D component, so the lamp will fall down. This works when I press the "enabled" checkbox in the inspector while testing the game.

But I can't get the code to work. I've tried:

Code (csharp):

1. HingeJoint2D.enabled = false;

and

Code (csharp):

1. Destroy(HingeJoint2D);

 

and "HingeJoint2D" is your variable pointing to the component?

 

Try:

Code (csharp):

1. Destroy(gameObject.getComponent("HingeJoint2d"))

 

I tried:

Code (csharp):

1. var joint : HingeJoint2D;
2. joint.enabled = false;

But Unity says:

UnassignedReferenceException: The variable joint of 'Jointti' has not been assigned.
You probably need to assign the joint variable of the Jointti script in the inspector.

And I don't know what this means.

At first Unity didn't react at all to this, no error message so I didn't know that it works. Then after I changed "2d" to "2D" this worked.

Code (csharp):

1. Destroy(gameObject.GetComponent("HingeJoint2D"));

I quess better way would be just to disable the HingeJoint2D, but Destroy does the trick.

Thank you for the help!