xslt 1.0 - Need to group xsl:for-each-group with Muenchian method -

i not able retrieve unique list applying muenchian method. trying group based on "series title" attribute

sample input xml: <?xml version="1.0" encoding="utf-8" standalone="yes"?> <distribution> <manifestheader>     <assets>         <asset>             <id>23341528</id>             <createdate>2008-01-14t17:02:01z</createdate>             <metadatas>                 <metadata name="psa.orig.source.showtitle">green home 2008</metadata>                 <metadata name="displayruntime">00:01</metadata>                 <metadata name="series title">desperate landscapes</metadata>             </metadatas>         </asset>         <asset>             <id>23341529</id>             <createdate>2010-08-23t15:44:58z</createdate>             <metadatas>                 <metadata name="psa.orig.source.showtitle">urban oasis 2010</metadata>                 <metadata name="displayruntime">00:02</metadata>                 <metadata name="series title">toy hunter</metadata>             </metadatas>         </asset>         <asset>             <id>23377202</id>             <createdate>2007-05-18t07:40:25z</createdate>             <metadatas>                 <metadata name="webseries"/>                 <metadata name="psa.orig.source.showtitle">cool tools</metadata>                 <metadata name="displayruntime">00:20</metadata>                 <metadata name="series title">desperate landscapes</metadata>             </metadatas>         </asset>     </assets> </manifestheader> </distribution> 

xlst:

<xsl:key name="keyseriesname" match="metadata[@name='series title']" use="text()" />  <xsl:for-each select="metadata[@name='series title'][generate-id() =                                             generate-id(key('keyseriesname', text())[1])]"> tried: <xsl:for-each select="metadata[@name='series title'][count(. |      key('keyseriesname',text())[1]) = 1]"> 

anyhelp appreciated

thanks in advance

since <metadata> elements children of <metadata> , trying search across entire collection of them within document, going need adjust xpath ensure addressing of them:

/distribution/manifestheader/assets/asset/metadatas/metadata     [@name='series title'][generate-id() =                                                    generate-id(key('keyseriesname', text())[1])] 

or use shorter, less efficient:

//metadata[@name='series title'][generate-id() =                                   generate-id(key('keyseriesname', text())[1])]