Rich Filter Flexi Charts

[sikimimi]

Hello all, 

I am creating a dashboard in Jira following this documentation : 

Add rich filter flexi charts gadgets to your dashboard - Rich Filters for Jira Dashboards (Cloud) Documentation - Confluence

However I do not find this "Rich Filter Flexi Chart" in my gadget list, do you what could be the reason for that? 

Best, 

Meriem :)