[wpkg-users] Accessing value of revision in cmd

[MI]

Is there any way to use the value of the revision attribute inside a package definition?

I tried things like <variable name="myvar" value="%revision%" />, without success.

What I'm after is a way to use things like

<install cmd="reg add HKLM\software\mykey /v xy-revision /d %revision% /f" />

It doesn't seem possible, but maybe I have overlooked something?