Since this short version string is heavily promoted through the App Store and the app submit process, I would say that Icenium should also support this through the UI.
We also got this warning from Apple during the submit process:
We have discovered one or more issues with your recent delivery for "App-Name". Your delivery was successful, but you may wish to correct the following issues in your next delivery:
Version Mismatch - Neither CFBundleVersion ['126.96.36.199'] nor CFBundleShortVersionString [''] in the Info.plist match the version of the app set in iTunes Connect ['1.0'].
If you would like to update your binary for this app, you can reject this binary from the Binary Details page in iTunes Connect. Note that rejecting your binary will remove your app from the review queue and the review process will start over from the beginning when you resubmit your binary.
The App Store team