[{"_id":"87124eb6-c9f7-49b9-8470-8c2b7fb07dc8","VisitName":"demo visit","Version":"string","FormStatus":"string","FormName":"demo form","IsDeleted":false,"Pages":[{"PageName":"demo page","PageNo":1,"PageStatus":true,"Field":[{"FieldName":"Gender","Value":"demo value","Comment":"demo comment",}]}]}]

db.collection.update({"FormName":"demo form"},{$set:{"Pages.$[pageItem].Field.$[fieldItem].Value":"new value"}},{arrayFilters:[{"pageItem.PageName":"demo page"},{"fieldItem.FieldName":"Gender"}]})