Help me accomplish this [Resolved]

[EJ12N]

What i would like to accomplish is the following:

Create a type of bruteforcer if we can call it that that does this...

-Generate a key of 12 Chars. (cant be more or less)
-The key gotta be only characters from A - Z (cant be lowercases or number only from A - Z)

Now here's the hard part...

The result of the sum of ascii of each character in the key gotta be = 384(hex)

So this is a valid key

A = 45, N = 4E, W = 57, K = 4B, Q = 51, M = 4D, M = 4D, L = 4C, I = 49, J = 4A, G = 47, B = 42

(numbers are ascii values :P of each letter)

ok if we sum all those ascii value it will give us 384h and that's what i want but there are more possibilities so i want to make a program that does that i explained

Well hope you guys understand it so hopefully someone can help me

Thank you!