Looks like you need this:
${restadmin("boards/id/${coreNode.id}/metrics/name/avg_thread_response_time?date_start=2023-01-01&date_end=2023-02-01").value}
I might picked the wrong metric, but you can find the name of each by grabbing the value from url like
/t5/bizapps/page/tab/community%3Aadmin%3Aanalytics-main%3Aadvanced-metrics?board_selection=freelancers&date_range=3-12-2023%2C4-12-2023&granularity=Daily&metrics=avg_thread_response_time&metrics_scope=board&user_selection=Empty
Dates can get weird, but you should be able to use the datesupport method
datesupport.addMonth(-1)
Weird - this is returning the *total* Minutes to First Response (as showing on Community Admin Analytics) rather than the *avg*
Even though my URL is asking for the average:
Is there anything obviously wrong here that would case that?
boards/id/PolicyInternal/metrics/name/avg_thread_response_time?date_start=2023-10-15&date_end=2023-11-15
