VRO workflow development - update vRO version

Good morning all,

I'm just starting my journey down the vRO plugin development path.

I've followed the directions on these two blogs

https://www.helloitscraig.co.uk/2016/04/getting-started-vro-plugin-development-part-1.html

&

https://www.helloitscraig.co.uk/2016/04/getting-started-vro-plugin-development-part-2.html

And have been able to update the build number using the maven plugin.  This is the only change I made to the base archtype I downloaded.

<plugin>

   <groupId>org.codehaus.mojo</groupId>

   <artifactId>buildnumber-maven-plugin</artifactId>

   <version>1.4</version>

   <executions>

    <execution>

      <phase>validate</phase>

      <goals>

        <goal>create</goal>

      </goals>

    </execution>

   </executions>

   <configuration>

   <buildNumberPropertyName>build.number</buildNumberPropertyName>

    <revisionOnScmFailure>no.scm.config.in.pom</revisionOnScmFailure>

    <doCheck>true</doCheck>

    <doUpdate>true</doUpdate>

      <format>{0,date,yyyyDHmm}</format>

      <items>

        <item>timestamp</item>

      </items>

   </configuration>

</plugin>

However when I try to upload the new version, vRO rejects it saying the new version is the same as the old one, even though the build number is higher. I get the same error if I update to 1.0.2-SNAPSHOT.blah.

What, and where (and how) do I need to add to update the vRO version?

Currently using vRO 7.0.1

Thanks in advance.