Using RpStructuredAccess in AWS

Hi,Has anyone used the RpStructuredAccess keyword in AWS. When I put this in the pageheader pbuilder appears to generate all of the correct routines which I understand. The main routines are:- void RpStorePgconfig_Form_1_Data(void *theTaskDataPtr, Signed16Ptr theIndexValuesPtr); and void RpFetchconfigData(void *theTaskDataPtr, Signed16Ptr theIndexValuesPtr); In operation however only the Fetch routine gets called when the page loads. When I submit the form the call to the Store routine does not get called. Can anyone give me any clues where I am going wrong please Regards Roy