I am new to ant and TeamCity, but my team has been using it a little. We can’t seem to figure out this issue with customizing the build number.

We want the build number to be formatted: b.<year><month><day>, for example: b.20240606.

I have found that I can set parameters’ values in my build.xml file:

<property name="build.num" value="b.${current.date}" />
<property name="build.number" value="${build.num}" />

I am using these values to set the values for TeamCity; I have tried each of these without success:

<echo message="##teamcity[setParameter name='env.BUILD_DATE' value='${current.date}']" />
<echo message="##teamcity[setParameter name='env.BUILD_NUMBER' value='${build.num}']" />
<echo message="##teamcity[setParameter name='build.number' value='${build.num}']" />
<echo message="##teamcity[setParameter name='system.build.number' value='${build.num}']" />

I can see that this sets the values in TeamCity (after the build is complete):

But it must set these values after it has give the build a label in this list, because this is the label it has:

When I run the ant script in Eclipse, I see the outputs that I want, but does it not set them in time?

I also tried <echo message="##teamcity[buildnumber '${build.num}']" /> like this post suggests, but with no change in the result.

And I haven’t (yet) found anything useful in the documentation. This page seems like it says to do what I’ve tried…