Replace token using ant in Maven 2

<plugin>
    <artifactid>maven-antrun-plugin</artifactid>
    <executions>
      <execution>
        <id>Copy and filter af file</id>
        <goals><goal>run</goal></goals>
        <phase>prepare-package</phase>
        <configuration>
          <tasks> 
            <copy file="source_file" filtering="true" failonerror="true" overwrite="true" tofile="dest_file">
              <filterset>
                <filter value="${variable_name}" token="token_to_be_replaced" />
                <filter value="value" token="token_to_be_replaced" />
               </filterset>
            </copy>
          </tasks>
        </configuration>
      </execution>
    </executions>
</plugin>