Change MSI ProductVersion in MSI Nested in Setup.exe?

I've created a build script to build a Setup.exe using InstallShield. The Setup.exe has the .msi embedded within it so I can deploy a single file.

In the build script, I'd like to be able to update the ProductVersion value of the MSI that is embedded within the Setup.exe. Is that even possible? I know how to do this via the MSI Update Properties action if my FinalBuilder script is working with the .msi itself, but now that the InstallShield script generates a Setup.exe, I don't seem to have any way to update the ProductVersion of the embedded msi.

Is what I'm hoping to do impossible?