[RSS Feed/News] Looping through a foreach and counting the results

[XenForo]

If I have the following code:

Code:

<xf:foreach loop="$foobar" value="$foo">
</xf:foreach>

Is it possible to cumulatively check the value of a result and check to see if it is not null?

For example if I had 10 results I would like to read the following field:

Code:

$foo.xyz

And display some text if any of them return null.

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