How to display fields in list view in webdynpro configuration using Feeder Class

Hi experts,

I have to 7  fields in the table,these 7 fields to display in webdynpro using feeder class.

i have created one z class using  IF_FPM_GUIBB_LISTand implemented z method Get_employee.

then after i created configuration in webdynpro using feeder class,nothing to display in list.

please give me a solution.