Task.whenAllSuccess function always gives me the same task - kotlin

Question

I have a small problem with the processing of my task. I have a list (listImg) which contains bitmaps. Now I try to upload each image to Firebase Storage through a forEach loop and then pack it in an UploadTask. In the addOnSuccessListener, however, the same image is called every time. For example, I have 3 images in the listImg. All 3 show up correctly in the loop. I pack these into the task array. However, in the Task.whenAllSuccess function, each URL of the 3 tasks leads to the same image
What is it?
downloadUrls = mutableListOf<String>()
val tasks = mutableListOf<UploadTask>()
listImg.forEach {
if(bitmap!!.byteCount != it.byteCount) {
var spaceRef = storageRef.child("objektImages/"+UUID.randomUUID().toString()+".jpg")
val bitmap = it
bitmap.compress(Bitmap.CompressFormat.JPEG, 80, baos)
val data = baos.toByteArray()
var uploadTask = spaceRef.putBytes(data)
//Here log gives me different images, which is also intended
Log.d("URL:",bitmap.toString())
tasks.add(uploadTask)
}
}
Tasks.whenAllSuccess<UploadTask.TaskSnapshot>(tasks).addOnSuccessListener { taskSnapshot ->
taskSnapshot!!.forEach {
it.metadata!!.reference!!.downloadUrl.addOnSuccessListener { url->
//But here every downloadUrl leads to the same image.
downloadUrls.add(url.toString())
...
}
}
}