how to run a report on Jira for tasks accepted by a user in 3 month period

[NickyI123]

i need to run a report of all issues closed/accepted /rejected  by a specific user within a 3 month period, how do i do this?

(the tasks do not necessarily need to be assigned to the user) 

[Tomas Gustavsson]

some thing like this
project = yyyyy and assignee = "xxxxxxxx" and created < startOfMonth(3)

please also check 
https://confluence.atlassian.com/jirasoftwareserver073/advanced-searching-fields-reference-861256237.html

[Tomas Gustavsson]

instead of assignee, you can use
reporter or creator. 

[NickyI123]

thank you for your help, i have tried the query you sent, but not getting results from the "StartOfMonth" 

i need to give a report of all the tasks i have accepted for the team, so the tasks may not be assigned to me, how do i search for "accepted by"? 

[Tomas Gustavsson]

if accepted by is a custom field, you can use it.

project = yyyyy and "accepted by" = "firstname Lastname" and created < startOfMonth()

[Tomas Gustavsson]

otherwise if you skip, the assignee parameter, it should return all issues independent on ho was assign to it.