Help with Formula Rich Text. Open in new tab

I have a formula rich text field that I will use as a link to a report link that houses multiple files.

I am trying to figure out how to open the report in a new browser tab.

var text Invoices = URLRoot() & "db/bqni6ty2h?a=q&qid=6&nv=1&v0=" & [Related Parent Record ID];  //Report Link


"<a href=" & $Invoices & ">" & "Report Link" & "</a>" //This works, but opens the report in the same browser tab. *What do I add to open in a new tab?

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Mike Tamoush
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