JQL Query to find issues updated by the assignee in last number of days

[George Abdo]

Hi All,

I am trying to construct a JQL that would filter the issues updated by a group of agents before a certain (relative date).
So conditions:
Updated 10 days ago or earlier by the assignee
Created 4 months ago or earlier.

I have tried this JQL, but it is returning results to any issues for the assignee regardless of who approved:

project = PROJNAME AND updated >= -28d AND (
(issuekey IN updatedBy("User 1") and assignee="User 1")
OR
(issuekey IN updatedBy("User 2") and assignee="User 2")
OR
(issuekey IN updatedBy("user 3") and assignee="User 3")
)
and created <=startofmonth(-3)

Also, all users are members of "SupportGroup" so assuming we can also use membersof("supportgroup") instead of individual lines

Thanks

George