Path problem in xsl:document!!!

Hallo,
I have a parameter being passed from command line
using xt processor.
This parameter is path for creating xml file through
xsl.
so I have a param like this
<xsl:param name="xml_file_path"/>
and the element where i'm generating the xml file
<xt:document href="{xml_file_path}" type="xml">

when i use this, and run the xt process, it says
failure or data not found. file or directory not
found.
so please let me know how to give the path in href
attribute.
thanxs,
sri...

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