Sharepoint - CQWP to point to current site

In an ONET.XML file I build a page with a CQWP. The CQWP has a WebUrl property is there a way to set this to alway be the the current web?

I tried this but it didn't work.s

<AllUsersWebPart WebPartZoneID="g_LeftCell" WebPartOrder="1" >
      <![CDATA[
      <webParts>
...

<property name="WebUrl" type="string">~Site</p开发者_高级运维roperty>

That should work. I can find a couple examples where we have done that before. I don't know if it makes any difference, but one onet had:

<property name="WebUrl" type="string">~Site</property>

and another had:

<property name="WebUrl" type="string">~site</property>

But since both versions are working, I don't think the case on Site makes any difference.