run a scrip in Adobe Illustrator

[M. Leclerc]

This Visual basic scrip has error mesage "the object execute the Script is
not available"
Somebody may have an answer

Dim appRef
Set appRef = CreateObject("Illustrator.Application")
Set docRef = appRef.open("C:\Documents and Settings\marcel\Mes
documents\testbox.ai")
appRef.DoScript "Script1","Default Action"