[xsl] Get the most recent date

["LEGAULT, PHILLIP plegault@xxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

I have an XML file with the following sections with date fields.
I need the latest sf:LastModifiedDate field when sf:ActivityCategory_GCC__c =
Additional Information



      <records xsi:type="sf:Task">
         <sf:Id xsi:nil="true"/>
         <sf:ActivityAwarenessDate_GCC__c>2023-11-05T00:28:00.000Z</sf:Activi
tyAwarenessDate_GCC__c>
         <sf:ActivityCategory_GCC__c>Additional
Information</sf:ActivityCategory_GCC__c>
         <sf:ActivityNumber_GCC__c>xxxxxxx</sf:ActivityNumber_GCC__c>
         <sf:ActivityType_GCC__c>Receive Phone Call</sf:ActivityType_GCC__c>
         <sf:DetailsDelayedAwareness_GCC__c>The delay occurred because there
was a data-entry omission of "Task" when the follow-up report was
created.</sf:DetailsDelayedAwareness_GCC__c>
         <sf:LastModifiedDate>2023-11-09T04:30:46.000Z</sf:LastModifiedDate>
         <sf:ReasonDelayedAwareness_GCC__c>Other
Cause</sf:ReasonDelayedAwareness_GCC__c>
         <sf:Subject>Task</sf:Subject>
         <sf:TranslationCompleted_GCC__c>true</sf:TranslationCompleted_GCC__c
>
      </records>
      <records xsi:type="sf:Task">
         <sf:Id xsi:nil="true"/>
         <sf:ActivityAwarenessDate_GCC__c>2024-01-23T05:46:01.000Z</sf:Activi
tyAwarenessDate_GCC__c>
         <sf:ActivityCategory_GCC__c>Additional
Information</sf:ActivityCategory_GCC__c>
         <sf:ActivityNumber_GCC__c>xxxxxx</sf:ActivityNumber_GCC__c>
         <sf:ActivityType_GCC__c>Receive Phone Call</sf:ActivityType_GCC__c>
         <sf:LastModifiedDate>2024-01-25T13:27:31.000Z</sf:LastModifiedDate>
         <sf:Subject>Task</sf:Subject>
         <sf:TranslationCompleted_GCC__c>true</sf:TranslationCompleted_GCC__c
>
      </records>

Here is what I have now xslt 2


Receipt Date: <xsl:choose>
<xsl:when test="/records/sf:Tasks/records/sf:ActivityCategory_GCC__c =
'Additional Information' and
max(/records/sf:Tasks/records/sf:ActivityAwarenessDate_GCC__c)">
  <xsl:value-of
select="format-dateTime(/records/sf:Tasks/records[sf:ActivityCategory_GCC__c=
'Additional
Information']/./sf:ActivityAwarenessDate_GCC__c,'[D01]-[MN,*-3]-[Y0001]')" />
</xsl:when>
<xsl:when test="/records/sf:Tasks/records/sf:ActivityCategory_GCC__c =
'Initial'">
  <xsl:value-of
select="format-dateTime(/records/sf:Tasks/records[sf:ActivityCategory_GCC__c=
'Initial'][1]/./sf:ActivityAwarenessDate_GCC__c,'[D01]-[MN,*-3]-[Y0001]')" />
</xsl:when>
</xsl:choose>