Требуется найти ошибку в коде. - Assembler

.386
.model flat,stdcall
option   casemap:none
include C:\masm32\INCLUDE\WINDOWS.INC
include C:\masm32\INCLUDE\KERNEL32.INC 
include C:\masm32\INCLUDE\USER32.INC
include C:\masm32\INCLUDE\ADVAPI32.INC                                                  
                         
includelib C:\masm32\lib\comctl32.lib
includelib C:\masm32\lib\user32.lib
includelib C:\masm32\lib\gdi32.lib
includelib C:\masm32\lib\kernel32.lib                
includelib C:\masm32\lib\user32.lib
includelib C:\masm32\lib\advapi32.lib                 
.DATA 
 FORMAT DB '%d',0
 HINST DWORD 0,0
 FOR_PLUS DD ?,0
 FOR_MINUS DD 0,0
 String_CONTENER DB 256  dup (0),0
.CODE
START:  
 MOV FOR_PLUS,1000
 CALL AAA;запуск функции
 invoke wsprintf ,addr String_CONTENER,addr FORMAT ,FOR_PLUS,0
 invoke MessageBox, 0, addr String_CONTENER,addr FOR_MINUS,0
EXIT:
 invoke ExitProcess,0
AAA PROC ;функция
 MOV FOR_MINUS,"ABC"
 RET  
AAA ENDP

END START