Cannot capture Segment data in enhancement spot

Hi!

I am developing inbound IDOC for message type COND_A04, i have created a child Z-segement for E1KOMG, i am coding my logic in FM IDOC_INPUT_COND_A in enhancement spot ES_SAPLVKOI, in performs read_seg_e1komg and read_seg_e1konp,

Here in my code i want to capture my Z-segment data in read_seg_e1konp, but its getting cleared before entering into this subroutine, i need my Z_segment data for validation in read_seg_e1konp subroutine,

Can anybody give some idea how to capture data of my Z-segement in this subroutine read_seg_e1konp.