Custom NSIS script included in electron.manifest.json, still not getting expected output

[AjayKarthik2k]

I am using ElectronNET to create an desktop application from my dotnet react project. My primary aim is to backup the application if I am going to update to a newer version, and as per the docs which says that we can include a custom nsis script to customize the installer.

To check this feature I prepared an example script by seeing the electron builder docs.

My script looks like this :

My build section in electron.manifest.json looks like this :

As per the script, I think that it should create files in the $PROJECT_DIR. But I am not getting anything. Am I missing something, or I am just not connecting the dots right?

Thanks in advance!

P.S : I am also confused about where these variables $BUILD_RESOURCES_DIR and $PROJECT_DIR point to