<xsl:if test="string($ItemCode)=''"> <xsl:choose> <xsl:when test="string($ItemGroup)='V-VYROBEK'"> <bfa:number name="Series">70</bfa:number> <bfa:number name="ItmsGrpCod">108</bfa:number> </xsl:when> <xsl:when test="string($ItemGroup)='PC'"> <bfa:string name="Series">PC</bfa:string> <bfa:number name="ItmsGrpCod">106</bfa:number> </xsl:when> <xsl:otherwise>something</xsl:otherwise> </xsl:choose></xsl:if>