Hi, I'm just starting out and I'm trying to learn Swift with various tools including the Playground and I'm doing the "continue with the apps" exercises. I'm stuck at the point where I need to add the Colorpicker to change the color. The code seems right but the app won't let me move forward. struct CreatureDetail: View { /#-code-walkthrough(creatureDetail.intro)/ /#-code-walkthrough(creatureDetail.creatureConstant)/ let creature : Creature /#-code-walkthrough(creatureDetail.creatureConstant)/ //#-learning-code-snippet(addStateVarIsScaled) /*#-code-walkthrough(creatureDetail.stateVars)*/ @State var color = Color.white @State var shadowRadius : CGFloat = 0.5 @State var angle = Angle(degrees: 0) /*#-code-walkthrough(creatureDetail.stateVars)*/ var body: some View { VStack { Text(creature.emoji) .resizableFont() .colorMultiply(color) .shadow(color: color, radius: shadowRadius * 40) .rotation3DEffect(angle, axis: (x: 0.0, y: 1.0, z: 0.0)) ColorPicker("Choose a Color", selection: $color) .padding(.horizontal) } } }