How do I create a quick filter to show items completed in last 6 months?

[Brian Smith]

Looking to create a filter to show items completed in the last 6 months.  Thought maybe this would do it but nothing showed up:  resolved > -180d

[Jack Brickey]

well resolved should work but only if you have set the Resolution field when closing the issues which you absolutely should do. I expect you are not so you could try this...

status changed to resolved after 2019-10-01

change your date as desired.

but again, i recommend you focus on the Resolution field solution going forward. there are a number of threads explaining this so you the Search bar at the top of the page.