i have troubles filtering with XSLT, basically i have an xml, where i would like to get only those items where the Due Date falls into interval of 3 months ... i've written the following:

```
<xsl:variable name="TaskRows" select="/dsQueryResponse/Tasks/Rows/Row[@DueDate &gt; $IsoBeginQuartDate AND @DueDate &lt; $IsoEndQuartDate]"/>

```

But I get an error: "Failed seting processor stylesheet: expected token ']' found 'NAME' ...

IsoDates are calculated and formated dates in ISO format ...

Any idea, how to do it, or i can't use "AND" when filtering?

PS: i'm using XSLT 1.0