Work Flow Manager Setup

I am unable to register Work Flow Manager with SP Sites. I have two sites (Different Site Collections). Everything is setup correctly. Here is what I am using to get SP site register but having to luck

Register-SPWorkflowService –SPSite http://intranet–WorkflowHostUri "http://intranet.trp.com:12291" –AllowOAuthHttp

I also tried server name.

Register-SPWorkflowService –SPSite http://trpwfe1–WorkflowHostUri "http://trpwfe1.trp.com:12291" –AllowOAuthHttp

Here is the error message

Register-SPworkflowService : The remote server returned an error: (404) Not Found.

Windows 2012 Server x64, SharePoint 2013, SQL 2012