User Profile

I have a .dae file which is in shape of a Medal. Now this .dae file has a label element. I want to load this .dae file and want to update text on that label at runtime so user name will come there.let originalNode = scene?.rootNode.childNode(withName: "label", recursively: true) if let _text = originalNode?.geometry as? SCNText { _text.string = "Mohsin Khan" } // another way i tried let originalNode = scene?.rootNode.childNode(withName: "label", recursively: true) (originalNode?.geometry as! SCNText).string = "Mohsin Khan"I have tried various ways but nothing is working. FororiginalNode?.geometry as! SCNText // returning nilBelow if the structure of my model: