Sage CRM integration - Sage 300 server name port issue


CRM integration documentation specifies Sage 300 server name configuration as: "This is the URL from which you start the Sage 300 web screens and WebApi."

My client however uses a port number in the URL in order to access web screens (Both CRM and Sage300). When putting the sage300 URL into the setup screen i am including the port :8500 however CRM seems to drop the port when trying to make a connection. I verified this by trying to access the sage300 customer view through the CRM company page and the result returns " refused to connect."

Is there perhaps a different seperator other than a colon i should be using to include a port number in CRM?