Hi All, How to change UAT Data Source Connection to Production Data Source in Power BI Service

i have created two Parameters in desktop one with UAT and Prod Server details another one with Database details. but here challenge is i don't have Production data base access.

Now i created dashboard with UAT Data source and publishing the dashboard in Workspace, from there i need to change the dashboard source from UAT to Prod so the dashboard will be refresh with Prod data.

i tried like below:

after Pubishing the dashboard in work space without enabling the Enterprise gateway directly i went to parameter and i was able to change Source from UAT to Prod then tried to enable gwateway server but still showing UAT details over there.

if i have Prod DB access then in desktop level i can change and i will publish. please let me know is there any othere way to figure out.