Multiple selection in value help with Web service

Hi All,

I want to get data from web service and store in data base. I created input form with set of inputfields. For some input filds in that input form, I want to get value from web service.So I have used value help wizard. I followed below link to create value help wizard for web service.

value-help-wizard-working-with-java-web-service-

While creating value help, it is only showing 'single selection' option. It does not showing any other options. Here I want to get multiple values from value help. How can I acheive this?.

Thanks,

Venkatesh R