Add new z field in FB60 and MIRO in payment tab

Hi experts,

I need to add a new z field in FB60 and MIRO in the payment tab, I already add a new z field in basic data tab (with BADI_FDCB_SUBBAS04 badi) as indicated in the following link :

Display customer fields in header of logistics invoice verification transactions - Code Gallery - SCN Wiki

But I do not like to payment tab.

Please help.

Best regards,

Robert.