Issue accessing C# MVC ASMX web service

[DandeNada]

Hello, I obtained an asmx link from an external site that does not belong to me, and I initially tested it in the SOAP UI program. I inputted a sample value and received a response. I then added the same link (in wsdl format) to an MVC project using "add service reference." After making some adjustments in the settings, I created a web service. However, when I tried to use the variable I named within the controller (let's say it's named webService), it was not recognized. I cannot say that the web service is not working as it returned a response in SOAP UI. This is the first time I have encountered such a situation. What should I do?