The problem was originally described as:
><xsl:key name="lookup" match="row"
>  use="concat($TRANSFORMER_SourceCountry,'_layer_name')"/>
where the variable specifies a country code. After some discussion,
it came down to:
>So I guess I can not have a dynamic lookup table?

Not that way, but you could define several keys, then dynamically
pick which key:

<xsl:key name="US_lookup" match="row" use="US_layer_name"/>
<xsl:key name="ES_lookup" match="row" use="ES_layer_name"/>
<xsl:key name="CN_lookup" match="row" use="CN_layer_name"/>
<xsl:key name="BG_lookup" match="row" use="BG_layer_name"/>
then
...select=key(concat($country,'_lookup'),$value)...
Hope that helps!
.................David Marston


 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list