problem with customized destination path

during installation i'm giving an option to user to change the default installation dir. Once this is done, installation goes fine and installs in the user specifi开发者_运维技巧c location. But when i use INSTALLDIR to modify few registry entries, INSTALLDIR is having old, default values but not the user specified. This is happening to only one package and i couldn't find the reason. Any help will save my time. i use installshield 12 on win2k3 x86. ~calvin

You could use the TARGETDIR property instead of INSTALLDIR, or set the value to TARGETDIR when the user begins to install, and then use TARGETDIR when setting the registry values.