ckfinder wont recognize role?

Hi everyone, if somebody could help with this please.

I am trying to incorporate ckeditor and ckfinder to an Asp.Net Mvc 1 project. SO far everything is working fine. The only thing I cann't get to work right is the Access Control for ckfinder.

For what I understand, in the file ckfinder/config.ascx, the variable string RoleSessionVar is used to assign the role to be restricted. The default value is:

RoleSessionVar = "CKFinder_UserRole"; 

I have tree roles in my project Administrators, Editors and Contributors. So in order to get my current user Role I replace it for:

    string currentRole= ""; 
 
    if(HttpContext.Current.User.IsInRole("Administrators")) 
    { 
        currentRole = "Administrators";  
 } 
    else 
    { 
        if (HttpContext.Current.User.IsInRole("Editors")) 
            currentRole = "Editors"; 
        else 
        { 
            if (HttpContext.Current.User.IsInRole("Contributors")) 
            { 
                currentRole = "Contributors"; 
            } 
        } 
    } 
 
    RoleSessionVar = currentRole; 

The variable gets assigned with the correct Role for the current user. The next part in the config.ascx file are the ACL settings. The default one are:

AccessControl acl = AccessControl.Add(); 
    acl.Role = "*"; 
acl.ResourceType = "*"; acl.Folder = "/";

    acl.FolderView = true; 
    acl.FolderCreate = true; 
    acl.FolderRename = true; 
    acl.FolderDelete = true; 
 
    acl.FileView = true; 
    acl.FileUpload = true; 
    acl.FileRename = true; 
    acl.FileDelete = true;  

With these settings there are not any problems the ckfinder, it lists all the folders and files, but there with full permissions for everyone. I want to restrict deleting permissions to different Roles. Anyway just as a test I tried to give full permissions to Administrators' Role

AccessControl acl = AccessControl.Add(); 
    acl.Role = "Administrators"; 
acl.ResourceType = "*"; acl.Folder = "/";

    acl.FolderView = true; 
    acl.FolderCreate = true; 
    acl.FolderRename = true; 
    acl.FolderDelete = true; 
 
    acl.FileView = true; 
    acl.FileUpload = true; 
    acl.FileRename = true; 
    acl.FileDelete = true;  

But ckfinder will not show any folder or file even though RoleSessionVar = "Administrators".

I'll be very thankful for any ligh to the solution of this problem.