Setting the iis:WebDirProperties of a single file in WiX

Question

I am using WiX to deploy a web application under IIS.

I have no problems setting the different properties of my Web Application using the iis:WebDirProperties element.

However, I need to set all *.asmx file security attribute to "Integrated Windows Authentication". Does WiX have the ability to set the property of a single file?

*Note: This file is scattered all throughout the different directories. It would have been trivial all the services are in a separate directory.

Thanks!