sprite kit - SKSpriteNode subclassing. iOS 8.4 vs 9.x -

i've made app , along have been using custom made subclass special properties this

class skspritenodeb: skspritenode{  var tempflag = bool() var tempa = cgfloat() var tempb = cgfloat() var tempc = cgfloat()      } 

and calling :

   override func touchesbegan(touches: set<uitouch>, withevent event: uievent?) {     _ in touches {         let touch: uitouch = touches.first!         let location = touch.locationinnode(self)         let touchednode = self.nodeatpoint(location) as? skspritenodeb         touchednode.tempa = 5.0         touchednode.tempflag = false         //do }} 

this works in ios 9.0 , above when tested in ipad mini running ios 8.4 these skspritenodeb's not responding touches. have other nodes not skspritenodeb's , functioning correctly. advice appreciated! thanks!

one thing in situations this, when want node "hidden" still tappable instead of setting hidden true, set alpha 0.0, , when want "unhide" node increase alpha of node.