Debugging Write-back BAdI from Input form

Hi SAP Experts,

  I am doing a currency conversion of data sent from input form from planning currency to company code currency. Towards this, I have followed the document http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/f0309226-814f-2d10-61a6-ef8da29e3727?QuickLink=index&… for creating a BAdI implementation of Writeback. To debug, I have followed the Debugging BPC 10 for NetWeaver. But when I save the data from input form, I do not go into the ABAP GUI Debug mode and data gets saved. May I know the process to debug writeback BAdI for the data sent from input form?

Regards,

Draksh