I have set up to use Path variable, but when add UserLicenseAgreement dialog and when i select location of .rtf file, i see that in AIP whole location (<windowsVolume>some\path) is saved not path variable, can be used path variable for license agreement file? or Path variables are used only in Files and Folders section?
When creating a new environment variable, you can see that it is added/removed on a component install/uninstall. Basically, this means that it is created at install time.
With that being said, it is not possible to use it with your UserLicenseAgreement dialog.