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Hi Foks,
I’m getting `kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen` exception.
```Dependencies info -
kotlin = "1.4.30"
coroutines = "1.4.2-native-mt"
serialization = "1.0.1"
ktor = "1.4.2"```
This is what I’m doing -
```class Manager {
 var user: User
 init(){
  GlobalScope.async(context = Dispatchers.Default) {
  val result = callToSuspendFunction
  user = result //ERROR ON THIS LINE
 }
}```
How to achieve something like this?

You can not. You can't access a mutable variable (user) from two threads. Here `user` was probably created on the main thread and is written from default dispatcher.

Thanks for your quick response <@U3ZPQ4QR4>.
Yes, I’m calling this init from main thread.

i think you can assign value using `MainScope`  or using the `Dispatchers.Main`

You can use `AtomicReference`. In your case it would simply be:
```val user: AtomicReference&lt;User?&gt; = AtomicReference(null)```
If you’re writing a multiplatform code you could be interested in on of those two libraries:
<https://github.com/Kotlin/kotlinx.atomicfu>
<https://github.com/touchlab/Stately>

You can read more about why it’s needed here:
<https://kotlinlang.org/docs/mobile/concurrent-mutability.html>