Android 如何正确增加LazyStream中的变量

我想用硬编码数据制作简单的30天应用程序，但我有代表当天的变量，我想增加它，但当我这样做时，它做得不太正确.

@Composable
fun _30DaysApp() {
    var curDay by remember { mutableStateOf(1) }
    Scaffold(topBar = {
    }) { it ->
        LazyColumn(contentPadding = it) {
            items(tasks) {
                CardTask(task = it, day = curDay)
                curDay++

            }
        }
    }
}

@Composable
fun CardTask(task: Task, day: Int, modifier: Modifier = Modifier) {
    var expand by remember { mutableStateOf(false) }
    Card(shape = RoundedCornerShape(16.dp)) {
        Column(
            modifier = modifier
                .padding(12.dp)
        ) {
            Row {
                Text(text = stringResource(R.string.day, day))
                Spacer(modifier = modifier.weight(1f))
                ExpandButton(expanded = expand, onClick = { expand = !expand })
            }
            Text(text = stringResource(task.articleRes))
            Spacer(modifier = Modifier.size(8.dp))
            Image(
                painter = painterResource(task.imageRes), contentDescription = null,
                contentScale = ContentScale.Fit
            )
        }
    }
}

试图将其提升到CardTask功能，但仍然不起作用.有人能帮助我吗？