[{"searchWord":["pizz","pizza"],"result":[{"idMeal":1,"strMeal":"test1","strInstructions":"test1"},{"idMeal":2,"strMeal":"test2","strInstructions":"test2"}]}]

db.collection.update({"searchWord":"pizz"},{$set:{"result.$[r].strMeal":"UPDATED"}},{arrayFilters:[{"r.idMeal":1}]})