It looks like you are assigning the result in different thread, add @Volatile (java volatile) so that other threads can see the changes

@Volatile var profilePictureUrl: String = ...

I’m confused around member reference in Kotlin. I have a custom class that once I create an instance of it i execute api work. I keep a list of these instances of the class – once the api work has completed I want the list of the instances to be updated. In swift reference types handle this but I’m unsure how to implement in Kotlin.

So my code:
MY custom class:

    class MyCustomClass(var firstName: String, var lastName:String, var profilePictureUrl_String= EMPTY_STRING){
        
        fun getUsersProfilePicture(){
//api code executed here to fetch the users profile picture
            profilePictureUrl = api result
        }
    }

when I create an instance of this object I add to an array list in my viewmodel

var myClass = MyCustomClass("firstName", "lastName")
myClass.getUsersProfilePicture()
list.add(myClass)

The api function executes fine but the instance in my list is not updated with this value.
How do I update the object in my list once the api task has returned with the correct image?