How Increase Tx Power of TL-WN722N V1

hey there im on kali and trying to get my tx power to 30 for ewil twin attack but unfortunately the normal guide which is Iw Reg set BO or any other country doesnt work and even before that i could change to BO but nex command which setting tx power to 30 would take any effect and my tx power remains 20

I heard that you have to go another way for TL-WN722N and some alpha adapters but i dont know how.

Can someone plz help.