I can't use constants

Hello people!
I'm 16 years old and live in Germany.
My english isn't so god.
Sorry for wrong selected words and grammar. =)

I declare in line 181 to 189 constants with "equ".
But the FASM compiler show me errors.
I can't use the constants...

Here is my code (a little bit long ^^):
Code:
; ++++++++++ +++++++++ ++++++++ +++++++ ++++++ +++++ ++++ +++ ++ +
format PE GUI
; ++++++++++ +++++++++ ++++++++ +++++++ ++++++ +++++ ++++ +++ ++ +
section '.text' code readable executable
  push ebp
  mov ebp, esp

  push dword 0
  call [GetModuleHandleA]
  mov [hInstance], eax

  push dword IDC_CROSS
  push dword 0
  call [LoadCursorA]
  mov [hCursor], eax

  ;;;;; WND CLASS ;;;;;
  sub esp, SIZEOF_WNDCLASS

  mov dword [esp + 0], 3
  mov dword [esp + 4], WndProc
  mov dword [esp + 8], 0
  mov dword [esp +12], 0

  mov eax, [hInstance]
  mov dword [esp +16], eax
  mov dword [esp +20], 0

  mov eax, [hCursor]
  mov dword [esp +24], eax
  mov dword [esp +28], COLOR_APPWORKSPACE
  mov dword [esp +32], 0
  mov dword [esp +36], AppName

  push dword esp
  call [RegisterClassA]

  ;;;;; CREATEWINDOW ;;;;;
  push dword 0
  push dword [hInstance]
  push dword 0
  push dword 0
  push dword 250
  push dword 500
  push dword 100
  push dword 100
  push dword 0xcf0000
  push dword WindowTitle
  push dword AppName
  push dword 0x040000
  call [CreateWindowExA]

  mov [hWnd], eax
  push dword 1
  push dword [hWnd]
  call [ShowWindow]

  ;;;;; EDIT ;;;;;
  push dword 0
  push dword [hInstance]
  push dword 2
  push dword [hWnd]
  push dword 180
  push dword 275
  push dword 5
  push dword 5
  push dword 0x50201045
  push dword 0
  push dword szEditClass
  push dword 0x00000200
  call [CreateWindowExA]

  mov [hEdit1], eax
  push dword 1
  push dword [hEdit1]
  call [ShowWindow]

  push dword txtSample
  push dword [hEdit1]
  call [SetWindowTextA]

  ;;;;; BUTTON ;;;;;
  push dword 0
  push dword [hInstance]
  push dword 1
  push dword [hWnd]
  push dword 20
  push dword 275
  push dword 187
  push dword 5
  push dword 0x50001000
  push dword 0
  push dword szButtonClass
  push dword 0
  call [CreateWindowExA]

  mov [hButton1], eax
  push dword 1
  push dword [hButton1]
  call [ShowWindow]

  push dword txtButton
  push dword [hButton1]
  call [SetWindowTextA]

  ;;;;;;;;;;

  push dword MB_ICONSTOP
  call [MessageBeep]

  ;;;;; MESSAGELOOP ;;;;;
  sub esp, SIZEOF_MSG
  mov [wMsg], esp

  MessageLoop:
    push dword 0
    push dword 0
    push dword 0
    push dword [wMsg]
    call [GetMessageA]

    test eax, eax
    jz ExitMessageLoop

    push dword [wMsg]
    call [TranslateMessage]
    push dword [wMsg]
    call [DispatchMessageA]

    jmp MessageLoop

  ExitMessageLoop:
    add esp, SIZEOF_MSG

    push dword [hWnd]
    call [DestroyWindow]

    push dword [hInstance]
    push dword AppName
    call [UnregisterClassA]

    add esp, SIZEOF_WNDCLASS
    pop ebp

  ;;;;; EXIT ;;;;;
  push 0
  call [ExitProcess]

  ;;;;; WNDPROC ;;;;;
  WndProc:
    mov eax, [esp +8]
    cmp eax, WM_DESTROY
    jne WndProcNext
    push dword 0
    call [PostQuitMessage]

    WndProcNext:
      push dword [esp +16]
      push dword [esp +16]
      push dword [esp +16]
      push dword [esp +16]
      call [DefWindowProcA]

  ret 16
; ++++++++++ +++++++++ ++++++++ +++++++ ++++++ +++++ ++++ +++ ++ +
section '.data' data readable writeable
  AppName       db 'ASMGUI', 0
  WindowTitle   db 'FASM Window Demo', 0
  hInstance     dd 0
  hCursor       dd 0
  hWnd          dd 0
  wMsg          dd 0
  hEdit1        dd 0
  szEditClass   db 'EDIT', 0
  szButtonClass db 'BUTTON', 0
  txtButton     db 'Button Control', 0
  txtSample     db 'A Editcontrol. Make-Grafik like!', 0
  hButton1      dd 0
  hDC           dd 0

  COLOR_APPWORKSPACE equ 12
  SIZEOF_WNDCLASS    equ 40
  SIZEOF_MSG         equ 28
  WM_DESTROY         equ 0x02
  WM_CREATE          equ 0x01
  DASDING            equ 0.5
  IDC_CROSS          equ 0x7f03
  MB_ICONSTOP        equ 0x10
  DEFAULT            equ 0
; ++++++++++ +++++++++ ++++++++ +++++++ ++++++ +++++ ++++ +++ ++ +
section '.idata' import data readable writeable
  dd 0, 0, 0, rva Kernel32, rva _Kernel32
  dd 0, 0, 0, rva User32, rva _User32
  dd 0, 0, 0, 0, 0


  Kernel32 db 'Kernel32.dll', 0
  _Kernel32:
    ExitProcess      dd rva _ExitProcess
    GetModuleHandleA dd rva _GetModuleHandleA
  dd 0

  _ExitProcess dw 0
    db 'ExitProcess', 0

  _GetModuleHandleA dw 0
    db 'GetModuleHandleA', 0


  User32 db 'User32.dll', 0
  _User32:
    LoadCursorA      dd rva _LoadCursorA
    RegisterClassA   dd rva _RegisterClassA
    UnregisterClassA dd rva _UnregisterClassA
    CreateWindowExA  dd rva _CreateWindowExA
    DestroyWindow    dd rva _DestroyWindow
    ShowWindow       dd rva _ShowWindow
    GetMessageA      dd rva _GetMessageA
    TranslateMessage dd rva _TranslateMessage
    DispatchMessageA dd rva _DispatchMessageA
    DefWindowProcA   dd rva _DefWindowProcA
    PostQuitMessage  dd rva _PostQuitMessage
    MessageBeep      dd rva _MessageBeep
    SetWindowTextA   dd rva _SetWindowTextA
  dd 0

  _LoadCursorA dw 0
    db 'LoadCursorA', 0

  _RegisterClassA dw 0
    db 'RegisterClassA', 0

  _UnregisterClassA dw 0
    db 'UnregisterClassA', 0

  _CreateWindowExA dw 0
    db 'CreateWindowExA', 0

  _DestroyWindow dw 0
    db 'DestroyWindow', 0

  _ShowWindow dw 0
    db 'ShowWindow', 0

  _GetMessageA dw 0
    db 'GetMessageA', 0

  _TranslateMessage dw 0
    db 'TranslateMessage', 0

  _DispatchMessageA dw 0
    db 'DispatchMessageA', 0

  _DefWindowProcA dw 0
    db 'DefWindowProcA', 0

  _PostQuitMessage dw 0
    db 'PostQuitMessage', 0

  _MessageBeep dw 0
    db 'MessageBeep', 0

  _SetWindowTextA dw 0
    db 'SetWindowTextA', 0
; ++++++++++ +++++++++ ++++++++ +++++++ ++++++ +++++ ++++ +++ ++ +
section '.reloc' fixups data readable discardable
; ++++++++++ +++++++++ ++++++++ +++++++ ++++++ +++++ ++++ +++ ++ +
I hope you can help me. =)
PS: I learn asm yet.

Dear Make-Grafik