Q:

Update UIprogressView in swift

I have a uiprogressview into a uicollectionview, I'm trying to update the uiprogressview after selected a cell, but it does not update, this is my code:
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: Storyboard.myCell, for: indexPath) as! MyCell
            let timer = Timer.scheduledTimer(withTimeInterval: 1, repeats: true){
                (timer :Timer) in
                cell.progress.setProgress(cell.progress.progress + 0.1, animated: true)
                if cell.progress.progress >= 1 {
                    timer.invalidate()
                }
            }
            timer.fire()
    }

is it good?, how can I solve that problem. 
thanks in advance 

A:

The problem is here
collectionView.dequeueReusableCell(withReuseIdentifier: Storyboard.myCell, for: indexPath) as! MyCell

You have to use cellForItem
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let cell = collectionView.cellForItem(at:indexPath) as! MyCell

//
if cell.progress.progress >= 1 {
    cell.progress.progress = 0.1
}

