Problem in populating field of same name in main & sub screen

Hi Guys,

I have a problem in my BDC program where the same field name appear in main screen and subscreen. Everytime i run the BDC program it will only populate to the field in main screen but not in the subscreen.

Below are the result of my BDC recording: Where PKHD-LGNUM, PKHD-LGTYP and PKHD-LGPLA exist in main screen 0110 and also sub screen.

SAPMMPKR 0110 X

BDC_OKCODE =SAVE

<b><i> PKHD-LGPLA KB

PKHD-LGNUM 100

PKHD-LGTYP 150</i></b>

PKHD-BEHAZ 10

PKHD-SIGAZ 8

PKHD-BEHMG 50

BDC_SUBSCR SAPMMPKR 0813INCLUDE8XX

PKHD-UMLGO S020

<b><i> PKHD-LGNUM 100

PKHD-LGTYP 150

PKHD-LGPLA KB</i></b>

BDC_SUBSCR SAPMMPKR 0820INCLUDE820

BDC_CURSOR PKHD-KOSTL

PKHD-KOSTL 8441

BDC_SUBSCR SAPMMPKR 0830INCLUDE830

This is the actual extract from SAP standard recording program, i even re-run the recording and it is not able to populate the value back into the subscreen fields of the same.

Any one encounter the same problem and solve it? please help me please.

Many thanks,

Jay