First of all, this works 100% fine, but i feel like there is a better way, and maybe im not fully understanding the mutablelive data – observable conection, Although works fine..
ViewModel is doing the work, but the observe part is correct? Ignore retrofit plz.

@Composable
fun layoutX(){
val news = remember { mutableStateOf( ArrayList<BasicCardNews>()) } //ignore 'by'
//... here i do the ui layout with rows cols and boxes and some part i got this
getLazyColumnNews(mainActivity, news)//another composable function
...
}

@Composable
fun getLazyColumnNews(....) {
val appViewModel = viewModel(AppViewModel::class.java) //just to get the vm ref
appViewModel.startRetrofitCall() //getting the json as pojos 

appViewModel.news.observe(context,{ // im observing news in vm and update news.value
        news.value = appViewModel.getNews().value as ArrayList<BasicCardNoticia>
    })

LazyColumn(
        contentPadding = PaddingValues(...)
    ) {
 
 //So news.value starts with 0 elemenst but updated when we observer change
        items(news.value) { 
            getCardNoticia(info = it) // just mapping
            Spacer(...)
        }
    }


//And the viewmodel that makes the call:
fun startCall(){
...//retrofit stuff
viewModelScope.launch(Dispatchers.IO) {
        val response = apiCall.getRepoNews(UtilsStrings.urlResolve).awaitResponse()
        if (response.isSuccessful){ 
              // ... i mapped values to a new list so i can do this.
            news.value = newListX
         }

//last in view model this variable
var news = MutableLiveData<ArrayList<BasicCardNews>>()

fun getNews():LiveData<ArrayList<BasicCardNoticia>>{
    return alNews
}

This sums up a way to consume a rest using retrofit, coroutines, with compose.. but feels like a hack.. what is wrong with this please ??