Simple MessageBox question

[Yaboomaster]

Hello
I'm learing asm atm from some online tutorials.

I can't solve one thing. How its possible to show messagebox but with byte values?
Or how to convert byte to a string, is there any inttostr or something like that? Or is there any other way to do it?

Code:

.386
.model flat,stdcall
option casemap:none
include \masm32\include\windows.inc
include \masm32\include\kernel32.inc
includelib \masm32\lib\kernel32.lib
include \masm32\include\user32.inc
includelib \masm32\lib\user32.lib

.data
MsgBoxCaption  db "Hello",0
ClassName db "TibiaClient",0
test dd 123
.code

start:

invoke MessageBox, NULL, test, addr MsgBoxCaption, MB_OK
invoke ExitProcess, NULL
end start

[Yaboomaster]

nvm problem solved

Code:

include \masm32\macros\macros.asm    

    include \masm32\include\masm32.inc

    includelib \masm32\lib\masm32.lib

   ....

   invoke MessageBox, NULL, str$(test), addr MsgBoxCaption, MB_OK

   ....

^^