[izpack-users] error in substitution variable

[Jorge Vargas]

hi I want to keep my installer related file in a dir named "installer"
on my project. So I though I'll define this variable
        <variable name="approot" value="../" />

but when I use it like this
            <file src="$approot/lib" targetdir="$INSTALL_PATH" />

I get this error
-> Fatal error :
   install.xml:90: ./$approot/etc
com.izforge.izpack.compiler.CompilerException: install.xml:90: ./$approot/etc
        at com.izforge.izpack.compiler.CompilerConfig.parseError(CompilerConfig.java:1632)

anyone knows why the variable is not being substituted?