error using groups

[pranadevil]

hi buddies,

 

got this code :

 

additem:function()

    {

 

        

        box_ = this.box.getRandom();

        

        if(!box_){

        

        gameText.setText("now: NULLLLLLLLLLLLL"+box_.name);

        return;

        }

        gameText.setText("now: "+box_.name);

        box_.anchor.setTo(0.5,0.5);

        box_.reset(20,740);

        box_.body.velocity.x = -50;

    

       

        

        

    }

 

 

 

but when running got the error  ;Uncaught TypeError: Cannot read property 'velocity' of null ........................................... line 150 (box_.body.velocity.x = -50;)

 

 

this.box is a group with several sprites, fullfilled with a for loop. gameText is a text variable in which i got the name of each item, but it nevers shows "NULLLLLLLLLLLL" 

 

so what im forgetting? why the box_ variable doesnt has the body.velocity.x ???

 

 

 

thanks in advance

[pranadevil]

nevermind i missed enableBody = true