I have an installer that deploys a website as either a SSL or non-SSL IIS site depending on whether a property is set or not. I've been asked to add the option to set the port, which isn't a problem, but I'd like to set the port to the default values (80 or 443) if the value isn't set.

I tried something like:

    <SetProperty Id="OUTPORT" Before="InstallFiles" Value="80"><![CDATA[SSL=0]]></SetProperty>
    <SetProperty Id="OUTPORT"  Before="InstallFiles" Value="443"><![CDATA[SSL=1]]></SetProperty>

But, obviously, WiX complains about the custom action having the duplicate ID SetOUTPORT.

Am I jumping down another WiX-shaped rabbit hole here?

wix windows-installer
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