使用PhantomJS w/ Node并设置自定义用户代理

I am having trouble setting a custom user-agent for my phantom page. I have searched for possible solutions but I seem to be missing some fundamental part of how this should be working because when I try to set my settings, my phantom just hangs and doesn't complete the request or move into the page.open method. Here is my code:I am having trouble setting a custom user-agent