public async Task<bool> addImages(Project project)
{
    bool success = false;
    if (project.uuid.Equals(""))
    {
        return false;
    }

    mUploadedImages = 0;
    int totalImages = project.NumImages;

    mProject = project;
    string service = "service/imagen-project/add";
    string serviceURL = mBaseURL + "/pwpcloud/" + service;

    string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");

    for (int i = 1; i <= totalImages; i++)
    {
        //Read the image and put it inside a byte array

        string filePath = project.Name + "_ID" + project.ID + "_Pictures/Pic_"+i+".jpg";
        string fileUrl = "isostore:/" + filePath;
        IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication();

        //Rest request
        HttpClient restClient = new HttpClient();
        restClient.BaseAddress = new Uri(mBaseURL);
        restClient.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "multipart/form-data; boundary=" + boundary);

        // autentication
        setAuthorization(restClient, service,"POST");

        // This is the postdata
        MultipartFormDataContent content = new MultipartFormDataContent(boundary);
        StringContent textPart = new StringContent(project.uuid, Encoding.UTF8);
        content.Add(textPart, "project");

        var fileStream = isoStore.OpenFile(filePath, FileMode.Open, FileAccess.Read);
        fileStream.Position = 0;

        StreamContent imagePart = new StreamContent(fileStream);
        imagePart.Headers.Add("Content-Type", "image/jpeg");
        content.Add(imagePart, "file", project.uuid + "_Image_" + i + ".jpg");


        HttpRequestMessage req = new HttpRequestMessage(HttpMethod.Post, serviceURL);
        req.Content = content;
        HttpResponseMessage response = null;
        //string responseBodyAsText = "";

        try
        {
            response = await restClient.SendAsync(req);
            //responseBodyAsText = await response.Content.ReadAsStringAsync();
            if (response.StatusCode==HttpStatusCode.Conflict)
            {
                if (i == 5)
                {
                    success = true;
                }
                continue;
            }else if (response.StatusCode == HttpStatusCode.Created)
            {
                //MessageBox.Show("imagen " + i + " subida.");
                if (i==5)
                {
                    success = true;
                }
            }
            else
            {
                return false;
            }
        }
        catch (Exception e)
        {
            string err = e.Message;
        }
    }
    return success;
}