Teamcity build counter not being passed into Ant

Question

I'm using Teamcity to build with an Ant runner.

I'm trying to pass the current build counter into the "Additional Ant command line parameters" using the following

-lib %teamcity.build.checkoutDir%/MI/CustomAntTasks/jars/CustomAntTasks.jar -Dlabel={0}

The value -Dlabel={0} is being passed into the Ant script as the literal value {0} and not the current value of the build counter.

Any ideas on how I can correctly pass through the build counter (not the build number)?