Using refid

[Rahamim, Zvi (Zvi)]

Hi!
I'm using path id for classpath:

<path id="project.class.path">
    <pathelement location="lib/"/>
    <pathelement path="${java.class.path}/"/>
    <pathelement path="${additional.path}"/>
  </path>

<target ... >
    <javac ...>
      <classpath refid="project.class.path"/>
    </javac>
</target>

The problem is that I want to define the path id in a one xml file and
do the javac in other file.
If I do it, it tells: Reference project.class.path not found.

What can I do?

Thanks!