Can you search for users who are using a dashboard between certain dates ?

I'm looking for query where we can find users using the dashboards. The report I need is of users using XabAB_TBBBBB_Dashboard in Splunk Report Window, between the 20th August - Till Date. But when I try to find it by using below query, it gives the wrong results .Thanks in advance :) index="_internal" sourcetype=splunkd_ui_access | rex "/app/(?[^/]+)/(?[^?/\s]+)" |stats values(user)