**commonMain** ``` interface ICallback { fun onCall(params: Map<String, Any?>) } object SDKManager { private var callback: ICallback? = null fun setCallback(callback: ICallback?) { this.callback = callback } } ``` **iosApp** ``` import SwiftUI import shared @main struct iOSApp: App { init() { class SwiftCallback : ICallback { func onCall(params: [String : Any]) { } } SDKManager.shared.setCallback(callback: SwiftCallback()) } var body: some Scene { WindowGroup { ContentView() } } } ``` **Debug** callback ObjHeader * None **0x00000001014e0020** **The correct value should be 0x1014e0020 ?**  