Well I think I found a solution (although I did not fully implement the BAFunction yet).
If I declare the variable with an empty value, that is acceptable, and then when I use that variable in the MsiProperty, the MSI command line gets TRANSFORMS="", and the install succeeds. So now all I need to do is set the variable in the BAFunction when one of the existing transforms is needed. <Variable Name='QD_LANGID' Value='' Type='string' bal:Overridable='yes'/> later in the MsiPackage <MsiProperty Name='TRANSFORMS' Value='[QD_LANGID]'/> Thanks for the help. Phill -- View this message in context: http://windows-installer-xml-wix-toolset.687559.n2.nabble.com/Bundle-How-to-conditionally-pass-MsiProperty-tp7587888p7587906.html Sent from the wix-users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users