PO in display mode

Hello,

I have created a new custom subscreen in PO and have a button inside. Is it possible to make the PO display only after clicking the button. There is an option to make the PO display only in the method OPEn of BADI ME_PROCESS_PO_CUST but it is not getting trigerred after the click of the button in the custom tab.

Can someone suggest a solution pls?

Thanks,

Prem