Change AutoRefresh property from action

I would like to set WebImage(s) AutoRefresh property (boolean) from other BUTTONs Action…

I click on a BUTTON
When i clicked, set the other WebImage(s) AutoRefresh to On (or Off)

I have set:
BUTTON > EventTrigger.Event.Clicked
BUTTON > EventTrigger.Actions.PropertySetter (Target: WebImage; Property:AutoRefresh; Value:False or True)

When i click on the BUTTON, the app says: Property ‘AutoRefresh’ not found