So I have a group, and it has three sprites.   create() {              var parent = game.add.group();          var allSprites = [ 'sprite1', 'sprite2', 'sprite3'];          for (i=0; i<3; i++){           childImage = parent.create( game.world.centerX,  game.world.centerY+ (i*30), allSprites);           childImage.anchor.setTo(0.5, 1);           childImage.inputEnabled = true;           childImage.input.useHandCursor = true;         }  }     How to I trigger function changeText(); when one of the child sprite is clicked. So far I have tried this method below but  it only detects click on the last sprite. update(){     child.events.onInputDown.add(changeText, this); }