[{"data":{"category":[{"name":"HELLO","subcategory":["EDUCATION","ART",]},{"name":"HELLO","subcategory":["GG","ART",]},{"name":"HELLO","subcategory":["EDUCATION","SHORE",]}]}},{"data":{"category":[{"name":"HELLO","subcategory":["EDUCATION","HELLO",]}]}},{"data":{"category":[{"name":"HELLO","subcategory":["GG","ART",]}]}}]

db.collection.update({"data.category.subcategory":"EDUCATION"},{"$set":{"data.category.$[].subcategory.$[elem]":"SPORTS"}},{"arrayFilters":[{"elem":"EDUCATION"}],"multi":true})