How can I create a dashboard table for tests under a list of Epics?

[David Kon]

Hi,

We use X-Ray addon in our Jira installation.

I created some Epics, and each Epic is "tested by" some tests.

I would like to have a table in the dashboard showing

Epic            |            Number of tests

Epic1          |                   4

Epic2          |                  5

I tried to create afilter but got stuck with "childIssuesOf" which is not supported in our installation

Thanks!