Obtaining generated ProductCode as a variable in Wix

Obtaining generated ProductCode as a variable in Wix

In our product we use
Is there a way for Wix to tell me what ProductCode it has generated so
that I can add it as a variable to a "RegistryValue" Wix element?
I'm guessing there isn't, so I tried using a "
Is there any pure Wix way to achieve what I want? I could generate the
ProductCode outside of Wix and have the Wix elements use this as an
environment variable, but this adds an extra level of complexity to the
build process - something else that could break. I would like it if I
could do this purely with Wix.