Cannot get it to work

[Milgas]

i cannot get this to work can u check it out?

\Dialog_Editor
function# hDlg message wParam lParam
if(hDlg) goto messages

def PBM_SETRANGE (WM_USER+1)
def PBM_SETPOS (WM_USER+2)
def PBM_DELTAPOS (WM_USER+3)

BEGIN DIALOG
0 "" 0x10C80A44 0x100 0 0 217 47 "Fire Giant Timer"
1 Button 0x54030001 0x4 108 28 48 14 "OK"
2 Button 0x54030000 0x4 162 28 48 14 "Cancel"
3 msctls_progress32 0x54000000 0x4 8 10 136 12 ""
4 Button 0x54032000 0x4 8 28 48 14 "Start"
5 Static 0x54000000 0x0 160 10 48 12 ""
END DIALOG
DIALOG EDITOR: "" 0x2030208 "" "" ""

ret
messages
sel message
case WM_INITDIALOG DT_Init(hDlg lParam); ret 1
case WM_DESTROY DT_DeleteData(hDlg)
case WM_COMMAND goto messages2
ret
messages2
int ctrlid=wParam&0xFFFF; message=wParam>>16
sel wParam
case IDOK DT_Ok hDlg
case IDCANCEL DT_Cancel hDlg

case 4 ;;Start
opt waitmsg 1
int i; str s
i=0
int hpb=id(3 hDlg)
for i 0 100
SendMessage hpb PBM_SETPOS i 0
s.format("%i %%" i); s.setwintext(id(5 hDlg))
3.0
if i=95
run "$desktop$\FG.wav"
lef
SendMessage hpb PBM_SETPOS 0 0
s="Completed"; s.setwintext(id(5 hDlg))

Default range is 100. To change, SendMessage hpb PBM_SETRANGE 0 max<<16|min
PBM_DELTAPOS can be used insted of PBM_SETPOS to set increment instead of absolute value.

ret 1

says unknow identifier, don't know what to do