How to use a variable value in ANT refid

[WebServices Development]

I am trying to use a value of a variable with path refid in ANT.

I tried different approaches and am getting different errors. Is it possible to 
use a variable value for refid?

    <path id="compile.classpath">

        <path refid="shared.lib.classpath" />

        <path refid="ext.classpath" />

        <path refid="common.classpath" />

        <path refid="${ant.refid:seq.1}" />

        <path refid="ear.lib.classpath" />

    </path>

Reference ${ant.refid:seq.1} not found.



OR



    <path id="compile.classpath">

        <path refid="shared.lib.classpath" />

        <path refid="ext.classpath" />

        <path refid="common.classpath" />

        <path refid="${toString:seq.1}" />

        <path refid="ear.lib.classpath" />

    </path>

Unresolvable reference ${toString:seq.1} might be a misuse of property 
expansion syntax.



OR



    <path id="compile.classpath">

        <path refid="shared.lib.classpath" />

        <path refid="ext.classpath" />

        <path refid="common.classpath" />

        <path refid="${seq.1}" />

        <path refid="ear.lib.classpath" />

    </path>

Reference ${seq.1} not found.



This is how my seq.1 is defined



    <property name="seq.1" value="module.compile.classpath" />

    <echo>seq.1: ${seq.1}</echo>



which displays [echo] seq.1: module.compile.classpath

module.compile.classpath is defined elsewhere



and if I use

 <path id="compile.classpath">

        <path refid="shared.lib.classpath" />

        <path refid="ext.classpath" />

        <path refid="common.classpath" />

        <path refid="module.compile.classpath" />

        <path refid="ear.lib.classpath" />

    </path>

the build works.



So, How can I use a variable for refid to make it work? This way I can change 
the sequence prior to defining the compile.classpath and use the appropriate 
sequence for the build I am running?




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