[{"_id":ObjectId("5b435afff64f913c51799334"),"_class":"com.games24x7.mongo.ChatMessageClanId","chatMessage":[{"playerId":NumberLong(230000034),"message":"Hi ","messageType":"NORMAL","chatTime":NumberLong("1530894311114"),"chatSequence":1},{"playerId":NumberLong(230000034),"message":"Hi ","messageType":"NORMAL","chatTime":NumberLong("1530894311114"),"chatSequence":2},{"playerId":NumberLong(230000034),"message":"Hi ","messageType":"NORMAL","chatTime":NumberLong("1530894311114"),"chatSequence":3},{"playerId":NumberLong(230000034),"message":"Hi ","messageType":"NORMAL","chatTime":NumberLong("1530894311114"),"chatSequence":4}],"clanId":1}]

db.collection.aggregate([{$project:{chatMessage:{$filter:{input:"$chatMessage",as:"chatMsg",cond:{$gt:["$$chatMsg.chatSequence",2]}}},_class:1,clanId:1}}])