EWF/DUA help needed

I am trying to update a custom shell using DUA and EWF. Here is my DUA script-

// move the file from C:\ to c:\windows\systems32, but force it to wait
until a reboot to mov
MOVEFILE,0,1,C:\DUA\JP.exe,1,c:\Windows\System32\J P.exe,DAMOVEFILE_DELAY_UNTIL_REBOOT|DAMOVEFILE_REP LACE_EXISTING

// now commit EWF and reboo
EXECUTE,,DAYES,,c:\windows\system32\ewfmgr.exe,,c: \windows\system32\ewfmgr.exe c: -commit,,DAYES,,administrator,,admin,,,,,,
REBOOT,,DAREBOOTOPT_REBOOT

the script compiles ok, and it runs on the target, but the system never
reboots. I have used the script successfully without the EXECUTE statement
and without EWF, and it updates the shell OK. What do I need to do to update
the shell using EWF?
thanks
kevin