Method Transport_To_Model, Transport_From_Model Not Triggering

Hi All,

     I am creating one enhancement using BADI ME_GUI_PO_CUST. I implemented this BADI using methods Subscribe, Map_Dynpro_Fields, Transport_From_Model, Transport_To_Dynp,Transport_From_Dynp and Transport_To_Model. While debugging the program is not processing the following methods: Transport_From_Model, Transport_To_Dynp,Transport_From_Dynp and Transport_To_Model. While running transaction ME22N i am getting the fields but without any values also when i tried to save those values unable to do so. I think something is missing in the program.

I searched all the forums and applied all the solutions but still not getting the desired result.

Kindly help me on the same.

Thanks

Hitesh