xsl:if testing elements

How can I use xsl:if to test for a particular element value using
http://www.w3.org/1999/XSL/Transform?

For the xml:

<FOO>
  <BAR> Green </BAR>
</FOO>

And the xsl:

<xsl:template match="FOO">
   <xsl:if test="BAR = 'Green'">
         ... do something for Green BAR
   </xsl:if>
</xsl:template>


If BAR was an attribute of FOO, I can do "@BAR = 'Green'" with no problems,
but I don't want to base my selection attributes/elements on an
implementation (possibly?) detail like that.

I have in the past used ".[BAR = 'Green']" but that gives me a syntax error
now.

TIA,

Mike







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