A Query to be resolved in ARIS: How to design an EPC to implement as a webservice?

Hi, Please someone help in this query regarding creating an ARIS EPC model to generate a BPEL and WSDL files for “Hello world” example, deploy and test it. The hello world program will receive the input as name, process data and respond “hello” + name. If an input is given to the service as “Ram” we need to get the response as “Hello Ram”   How to design the detailed EPC by specifying the input, operation and output strings? What are the attributes need to get updated for the operation and variable details to get generated in the wsdl file?   I have created the EPC as below:         Also, I have defined the capabilities, Access diagram and Service allocation diagram, generated the UML Component diagram. Any guidance to generate a complete WSDL file would be great!   Thanks in Advance,