Flush Method in Feeder class CL_HRPAO_GUIBB_PA_DETAIL

Hey All, 

I have craeted a Z copy of the feeder class CL_HRPAO_GUIBB_PA_DETAIL. I am trying to set some global variable in flush() method.

problem is flush method is not having the current values  in IS_DATA. It have values of the previous event round trip and not the current values.

Also the table IT_CHANGE_LOG is blank even if values are changed in the FORM.

Please adive on how to get the current values.

Thanks,

Shilpa