[open-cobol-list] Oc and cygwin

[studiok]

Hello,
I am unable to exec a call "SYSTEM" in cygwin.
Os is  windows 7 64 bits, cygwin version is "CYGWIN_NT-6.1-WOW64 
1.7.20(0.266/5/3) 2013-06-07 11:11 i686".
As an example:
    cmdtoexec is full path to a previously builded .cmd file
    cmdtoexec, if executed from a cmd prompt executes regularely

    string
             "start "           delimited size
             '"comando" '  delimited size
             cmdtoexec    delimited spaces
             into w-syscall
   end-string

   resulting w-syscall is       start   "comando" c:\mystart\mycomand.cmd

   but call "SYSTEM" using w-syscall  does not execute.

I tried also
  move cmdtoexec     to w-syscall
  so that w-syscall contains c:\mystart\mycommand.cmd
  unsuccessfully.
   Some one of us has any suggestion?
Thanks
Marcellom