BADI_WCM_WCA_001 issue

Hi All,

I have a requirement to add an additional sub screen in WCTL Transaction ,

now i have added it through  BADI_WCM_WCA_001 

But my problem is with  out changing the any standard objects i need to display that sub screen 

for only a particular plant,

how to include this condition ?

Is this possible using the Filter condition? (I have tried this but i am not able to control the screen)

if yes please let me know the process?

Thanks,

Pavan