[{"name":"template","process":[{"identifier":"process1","steps":[{"identifier":"step1","sections":[{"identifier":"section1","wrappers":[{"id":"000000000","item":{"internalId":"00000001","name":"q1",}},{"id":"1234567890","item":{"internalId":"00000002","name":"q2","question":"why"},"answer":"**update answer here**"}]}]}]}]}]

db.collection.update({"process.steps.sections.wrappers.id":"1234567890"},{"$set":{"process.$[i].steps.$[j].sections.$[k].wrappers.$[l].answer":"my answer fooo XXX "}},{arrayFilters:[{"i":{"$exists":true},},{"j":{"$exists":true}},{"k":{"$exists":true},},{"l.id":"1234567890"}]})