Report Link data

I have used a report link to pull matching data from a table in a different app. It creates a link to a report, as the name suggests, but how do I access the summary data in the app? For example, I don't need a link to all the matching records, but I might want to know how many records it found, and then totals or averages of specific fields. Relationships offer these kinds of features, but I don't see them in Report Link.
Thanks,
Mark

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Mark Niekerk
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