webkanina xsl pt

Assuming the focus item is the level2 node, you can use a XSLT 1.0 sequence constructor like... <xsl:value-of select="concat(value[1],value[2],value[3])" />. ...or in XSLT 2.0... <xsl:value-of select...

Then you can convert to upper case: <xsl:value-of select="translate($toconvert,$lcletters,$ucletters)"/>.