[xsl] Complex expression

["Oleg Konovalov" <olegkon@xxxxxxxxx>]

Hi,

I am trying to modify existing XSL 1.0 code.
Need to check if the type of the Excel cells in specific column Start_Date
is indeed DATE.

Is that syntax correct?

<xsl:if test='not($row/sht:Cell/sht:Name[.="Start_Date"]/@ValueType="DATE")'>
 ... do something
</xsl:if>

(doesn't seem to work)

Sorry for the newbie question.

Thank you,
Oleg.