ALV USER Command

Hi Friends ,

I am doing one ALV Report.. Every thing working fine...Iam Using ALV user command...when I am double click on Material document number ..its going for MB03 transaction also.. Now the Issue is......

I want give double click option for Material document as well as Purchase order number also.. Iam using the function code &IC1 for first user command..

If I am going for second EBELN double click..

what is the function code..

please suggest me..

regards,

sampath