p2 physics

[guddy]

Hi,

I have add p2 physics to the sprite .But my sprite floating in air ,is not still in one place .I have use

 sprite.body.setZeroDamping();

 sprite.body.fixedRotation = true;

but it not working 

 

my code 

 

  this.image = 'block'+this.Level1[pos];

  this.cow = configObj.game.add.sprite(this.Xpos[pos], this.Ypos[pos], this.image);

  configObj.game.physics.p2.enable([this.cow]);

  this.cow.body.setZeroDamping();

  this.cow.body.fixedRotation = true;

  this.cow.inputEnabled = true;

  this.cow.events.onInputDown.add(this.mouseDownCallBack, this);

 this.cow.events.onInputUp.add(this.mouseUpCallBack, this);