How can i get the user to enter the instancename and password for installing SQL Express via Advanced Installers ( version 10.7.1 ) Exe bootstrapper (pre-install) ?
It there any trick to passing variables at that stage of the install?
I understand i can't use the feature-bases or post-install pre-req sections due to this this : http://www.advancedinstaller.com/user-guide/howto-install-sql-server-express.html
Setting installer public properties from the command line using an Advanced Installer EXE is described here: http://www.advancedinstaller.com/user-guide/exe-setup-file.html
However, you cannot add formatted references for public properties in the "Install Command Lines" section from the "Setup Files" tab of your SQL Server Express pre-install prerequisite. This is because the "Install Command Lines" fields only support formatted references when the prerequisite is feature-based.
This means you cannot set custom parameters from the command line when installing SQL Express setup, if you add the setup as a pre-install prerequisite.
Maybe Microsoft fixed the limitation of not being able to install SQL Express as a feature or post-install prerequisite. If not the only solution would be to use the approach from the tutorial you linked.