I am new to installer stuff .What I am trying to is that currently the package doesn't allow to downgrade from a newer version to older version.I am trying to do teh removal part using script and override this based on user response during installation . If the user select yes , uninstall and install the new.I have verified that the custom action in script works good if executed.
I have added a custom action to the .rul script and added it as the first action in the sequence.But when I debug I see that that the custom action is getting hit only after "preparing to remove" user prompt dialog , if any other version is present .I know this is something of a crazy use case ...
Appreciate if someone can help me ..many thanks in advance.
-Robs