Re: variable in xsl

now i got a xsl-file where i need a variable in (possibly from php).
the line i need dynamically is:
<xsl:param name="structure_nat" select="document
('../prototype/lang/de/xml/euro/structure.xml')"/>

before calling the xsl-file i dont know the values of 'de' and 'euro'.
can anyone explain me how to get those two values dynamical

<xsl:variable name="mylang" select="'de'"/>
<xsl:variable name="mycurr" select="'euro'"/>

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