Calling web method in url

Hi,

 

any one please tell me how we can call a method which is create in web service with two string like method name      register(string name,string mobile) 

 

and i am calling it through url

http://localhost:5727/WebSiteAPI/webservice.asmx?name=5&mobile=10 

 

it gives the error

please tell me how we can call web method through URL