Unsit If not in list

list whitelist = ["some name", "some name 2"];
default
{
    changed(integer change)
    {
        if(change & CHANGED_LINK)
        {
            key id = llAvatarOnSitTarget();
            if(id)
            {
                if(id != llGetOwner())
                {
                    string name = llKey2Name(id);
                    if(llListFindList(whitelist, [name]) == -1)
                    {
                        llUnSit(id);
                    }
                }
            }
        }
    }
}