for future readers..this is the solution i adoptedhttp://kb.acresso.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=installshield12helplib-IHelpSetupEXEErrorshtm&sliceId=&docTypeID=DT_MACROVISIONHELPNET_1_1&dialogID=21637321&...
i'm trying to change the variable ERRORLEVEL in the registry..i have found in the help this function.. but with a refresh (F5) in my REGISTRY EDITOR i can see this change only for few seconds..I AM NOT SURE this is the correct way... at this moment.....
