password Generator issue : cPanel/WHM sever

I have query about password generator

Password Generator default settings are as below & i want to change it

Password length : 12 characters

Alpha Characters : Both uppercase & lowercase (aBcD)
Non Alpha Characters : Both Special & numerical (1@3$)

I want to change it as below
Password length : keep 12 characters

Alpha Characters: Both uppercase & uppercase(aBcD}
Non Alpha Characters : I want only numerical (12345)

password should be as 4 uppercase + 4 uppercase 4 numerical = 12 characters length ABCD1234efgh

for further clarification i have attached herewith 2 screen shots

file names are "pwdgen-defaultsettigs" & "mysettigs"

I want to use password generator So i can change cPanel password from WHM, cPanel , webmail password

But the default characters are

Alpha Characters : Both uppercase & lowercase (aBcD)
Non Alpha Characters : Both Special & numerical (1@3$)

I don't want Special characters just only numerical+uppercase+lowercase

Regards,
Nilesh