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    <p>Based upon @Joe suggestion I looked into the build-helper-maven-plugin and was able to come up with the following which does what I need. I wasn't able to identify how to do it all in one step, so I'm doing it in 2. The first step pads the value on the left with zeros. The second step trims the numeric value so that it is only 7 digits long. Please note that ${build.env.version} is passed in as a parameter to the maven build process and that I have defaulted it to 0 in the POM file for when it isn't passed. If you don't provide a default value then the build fails even though failOnError on set to false. </p> <pre><code> &lt;plugin&gt; &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt; &lt;artifactId&gt;build-helper-maven-plugin&lt;/artifactId&gt; &lt;version&gt;1.8&lt;/version&gt; &lt;executions&gt; &lt;execution&gt; &lt;id&gt;stage1--padNumber&lt;/id&gt; &lt;goals&gt; &lt;goal&gt;regex-property&lt;/goal&gt; &lt;/goals&gt; &lt;configuration&gt; &lt;name&gt;build.env.version.padded&lt;/name&gt; &lt;value&gt;${build.env.version}&lt;/value&gt; &lt;regex&gt;^([\d]{0,})$&lt;/regex&gt; &lt;replacement&gt;000000$1&lt;/replacement&gt; &lt;failIfNoMatch&gt;false&lt;/failIfNoMatch&gt; &lt;failOnError&gt;false&lt;/failOnError&gt; &lt;/configuration&gt; &lt;/execution&gt; &lt;execution&gt; &lt;id&gt;stage2--leftTrimToXcharacters&lt;/id&gt; &lt;goals&gt; &lt;goal&gt;regex-property&lt;/goal&gt; &lt;/goals&gt; &lt;configuration&gt; &lt;name&gt;build.env.version.padded&lt;/name&gt; &lt;value&gt;${build.env.version.padded}&lt;/value&gt; &lt;regex&gt;^([\d]*)([\d]{7})$&lt;/regex&gt; &lt;replacement&gt;$2&lt;/replacement&gt; &lt;failIfNoMatch&gt;false&lt;/failIfNoMatch&gt; &lt;failOnError&gt;false&lt;/failOnError&gt; &lt;/configuration&gt; &lt;/execution&gt; &lt;/executions&gt; &lt;/plugin&gt; </code></pre>
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