How to put a break point in Web Service Soap

Question

We have a normal web service, normal say: Not WCF. There are methods that are consumed by the application developed by us. As is giving an error and the message is in WS, I would like to know how I do through my web application Forms, I log into WS and see the values of variables, parameters and etc... that is going on at the moment.

WS is on the same project as my application, but I’m in a production environment, but as I enter this environment from my computer via Visual Studio, I believe that the WS that goes to the air is what is in the project and not published in IIS, right? Because of the production environment I use only the Database and nothing else.