Writing a Web services server function
Writing a Web service with Genero is quite simple. You create a standard Genero function and publish it as a Web function (Web services operation) using methods from the classes in the COM library. There are restrictions on the function - input and output parameters are not allowed. By using global or module variables, however, to work around this exception.
See also Tutorial: Writing a GWS Server Application
The steps for writing a Web Services function: