Many Thanks Arsalan for assisting me in tagging friends in wall post. Iam trying to make notifications work for tagged friend in wall post . Heres the link . https://github.com/nikhilvinnakoti/MyTruckerPro/blob/main/MentionNotifications/ossn_com.php. So I am trying to make changes in mention notifications for wall post. Please have a look at the functions at lines 25,88,107,115,136,155. Please tell me whats wrong here. I implemented the same logic u suggested earlier for wall mentions. I think in function present at line 136 I need to make changes. Iam not clear about annotations. Also I need to add a switch case for wall in function present at line 37.