Using datamanager to upload an avatar for a user other than the current user?

[sub_ubi]

Hey all, Im finishing up a store system for my board and one of the things a user can buy, is the ability to change another user's avatar.

For the change-your-own-avatar option, the following block of code is used for the actual upload.

PHP Code:

        if(isset($vbulletin->GPC['upload']))
        {  
        require_once(DIR . '/includes/class_upload.php'); 
        require_once(DIR . '/includes/class_image.php'); 
             
        $upload = new vB_Upload_Userpic($vbulletin); 
             
        $upload->data =& datamanager_init('Userpic_Avatar', $vbulletin, ERRTYPE_STANDARD, 'userpic'); 
        $upload->image =& vB_Image::fetch_library($vbulletin); 
        $upload->maxwidth = $vbulletin->userinfo['permissions']['avatarmaxwidth']; 
        $upload->maxheight = $vbulletin->userinfo['permissions']['avatarmaxheight']; 
        $upload->maxuploadsize = $vbulletin->userinfo['permissions']['avatarmaxsize']; 
        $upload->allowanimation = ($vbulletin->userinfo['permissions']['genericpermissions'] & $vbulletin->bf_ugp_genericpermissions['cananimateavatar']) ? true : false; 
             
        if (!$upload->process_upload($vbulletin->GPC['upload'])) 
        { 
              eval(standard_error($upload->fetch_error()));
        }
        else
        { 


Is there a way I can use a similar method to change a target user's avatar?

Thanks.

I've got other functions that have targets so I dont need any info on looking up certain user data, etc, Im just puzzled on how to actually upload the file and set it to a specified user's avatar.