Customer field layout

Hi,

For the Shopping Cart, I create 3 customer fields using normal procedure (http://scn.sap.com/docs/DOC-46535). Now I can see the custom fields  on webdynpro (/SAPSRM/WDC_UI_SC_DOFC_HD).

My problem is that  it’s impossibile to customizing the web dynpro layout (position of customer fields on web dynpro); when I go to web dynpro : /SAPSRM/WDC_UI_SC_DOFC_HD with transaction SE80, my custom fields aren’t in View “V_SC_BOFC_HD”.

How can J set the layout in this case?

Thanks a lot