Exit Installation action in Wise Package Studio

I can see lot of discusssions still going on over the topic "Returning an Exit Code from within Wise script".
In case of Wise script wrapper installs, it is important to get an exit code from the installation so that in case of an error returned from the install.

Exit Installation action exits the WiseScript .EXE with an Exit Code. An exit code should be a Non-Negetive integer value.
I would like to have an enhancement in Wise Package Studio, which will allow Exit Installation action to return a variable as an Exit Code.

Check the following discussion on Exit Installation action:
https://www-secure.symantec.com/connect/forums/exit-code-within-wise-script

Cheers,
Tillu