I have this code:  init: function () { screenObjects = gameObject.add.group(); guidesGroup = gameObject.add.group(); }, create: function () { guide1 = gameObject.add.sprite(0, 0, si.ImageAssetKeys.GUIDE_1_IMG); guide1.name = 'guide1'; screenObjects.add(guide1); guidesGroup.add(guide1); guide2 = gameObject.add.sprite(0, 0, si.ImageAssetKeys.GUIDE_2_IMG); guide2.name = 'guide2'; screenObjects.add(guide2); guidesGroup.add(guide2); guide3 = gameObject.add.sprite(0, 0,