I would like to add an additional class path to the exec-maven-plugin.
Besides the %classpath, I would like to add an extra path to a directory containing resources (/Users/kornp/resources). Currently, my pom looks like this:

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>exec-maven-plugin</artifactId>
  <version>1.1.1</version>
  <configuration>
    <executable>java</executable>
    <classpathScope>runtime</classpathScope>
    <arguments>
      <argument>%classpath:/Users/kornp/resources</argument>
      <argument>org.drrabbit.maventest.App</argument>
    </arguments>
  </configuration>
</plugin>

How should I configure this?