SetNoBackupFlag and StreamingAsset - iOS Data Storage Guidelines reject

Dear forum,

I hope to have response to this problem I have with Apple Store review.

I have two files in StreamingAssets (1xMP4 and 1xPDF).

I send first time my app and it was reject becaiOS Data Storage Guidelines and iCloud backup storage rules.

So I use the function iPhone.SetNoBackupFlag.

This is my script:

using UnityEngine;
using System.Collections;

public class iOSDataStorageBackup : MonoBehaviour {

	public bool set;
	
	public string[] streamingAssets;
    
    // Use this for initialization
	void Awake () {
        #if UNITY_IPHONE
        if (set) {
            foreach (string asset in streamingAssets) {
                string assetPath = (Application.streamingAssetsPath + "/" + asset);
                iPhone.SetNoBackupFlag(assetPath);
            }     
        }
        #endif
	}
	
}

I set=true and insert my filename strings with size = 2.

After this operation, however I receive the same error …

How is it possible?

Thanks

Streaming assets folder is part of application distribution, so it shouldn’t be affected by iCloud backup rules, it’s probably something else.
Please share detailed rejection message.