Hi. In the project settings, I have tried to modify some parameters of the server: *Application root URL -> http://mysystem:8081 or http://localhost:8081/mysystem but when I run it, that URL doesn't work. Then only URL that is valid is http://localhost:8081 How I can change the URL?
To change the URL that your server is accessible at, you need to set up the appropriate DNS records to point to your box.
The "Application root URL" setting is to determine the webservices endpoints so that they can be published in the WSDL. The reason for this is that an app can never determine under what URLs it will be reachable at.