Language string missing for APP_EVENT_STORY_USER_REPOSTED_YOUR_POST

There is an langauge string missing for repost of events (media\com_easysocial\apps\event\shares\hooks\notification.repost.php)

I did an language over ride with "{actor} reposted your event post XXXX."

Now i want to replace XXXX with the event name, how do i achieve it?

i tried %3$s but its not recognising.

thanks & regards