如何在CollectionViewController中访问存储在CollectionViewCell中的变量

var cellVariable: String?

func setCellVariable(value: String) {
    cellVariable = value
}

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CellIdentifier", for: indexPath) as! CollectionViewCell
    
    let variableValue = "Example Value"
    cell.setCellVariable(value: variableValue)
    
    return cell
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let cell = collectionView.cellForItem(at: indexPath) as! CollectionViewCell
    
    if let cellVariable = cell.cellVariable {
        print("Cell Variable: \(cellVariable)")
    }
}