need CAML help for DVWP

I insertered a dvwp filtered by start time >=current date and end time <='1/23/2013' so it would be easy to find.

I would like the end date to be 13 months from the current date

here is the current code:

selectcommand="&lt;View&gt;&lt;Query&gt;&lt;Where&gt;&lt;And&gt;&lt;Geq&gt;&lt;FieldRef Name=&quot;EventDate&quot;/&gt;&lt;Value Type=&quot;DateTime&quot;&gt;&lt;Today/&gt;&lt;/Value&gt;&lt;/Geq&gt;&lt;Leq&gt;&lt;FieldRef Name=&quot;EndDate&quot;/&gt;&lt;Value Type=&quot;DateTime&quot;&gt;2013-01-23T14:37:34Z&lt;/Value&gt;&lt;/Leq&gt;&lt;/And&gt;&lt;/Where&gt;&lt;OrderBy&gt;&lt;FieldRef Name=&quot;EventDate&quot; Ascending=&quot;TRUE&quot;/&gt;&lt;/OrderBy&gt;&lt;/Query&gt;&lt;/View&gt;"

is it possible to do what I want to do?
sullisnyc44Asked:
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svetayeCommented:
Hello,
In general you can use the "OffsetDays" property to get the date.
Unfortunately you can only use days number as a offset, not months:

<Where>
<Geq>
<FieldRef Name="EndDate" />
<Value Type="DateTime">
<Today OffsetDays="390" />
</Value>
</Geq>
</Where>

Please see this for more info:
http://msdn.microsoft.com/en-us/library/ms460496.aspx
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sullisnyc44Author Commented:
thx. ok - so do I over write my code to read 'selectcommand=...' add your code?

Will it display the date range between the current date and 13 months out?
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sullisnyc44Author Commented:
if I try to change the commmand to this I get a 'non specific data error'

"&lt;View&gt;&lt;Query&gt;&lt;&lt;Where&gt;&lt;Geq&gt;&lt;FieldRef Name=\&quot;EventDate\&quot; /&gt;&lt;Value Type=\&quot;DateTime\&quot;&gt;&lt;Today OffsetDays=\&quot;390\&quot; /&gt;&lt;/Value&gt;&lt;/Geq&gt;&lt;/Where&gt;&lt;/Query&gt;&lt;/View&gt;"
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svetayeCommented:
This is the exact code, just copy the "selectcommand" property value:

<SharePoint:SPDataSource runat="server" DataSourceMode="List" UseInternalName="true" UseServerDataFormat="True" selectcommand="<Query>
<Where>
      <Geq>
      <FieldRef Name='EndDate' />
      <Value Type='DateTime'>
      <Today OffsetDays='390' />
      </Value>
      </Geq>
</Where>
</Query>" id="dataformwebpart1">
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