How to update MongoDB collection field using another field using MongoTemplate in spring-boot

Question

I need a field value to be updated using another field using the mongo template in spring-boot. I am aware of how this can be done using MongoDB queries. But could not figure out a way of doing this using MongoTemplate from the database level without loading the data to the memory.

I am searching for something like this. The value1 is in the collection and it needs to be updated from a value from a nested array (menu) and 0th index contains the value always.

    Query query = new Query();
    query.addCriteria(Criteria.where("price").is(0));

    Update update = new Update();
    update.set("price", "$menu[0].sellingPrice");

    mongoTemplate.updateMulti(query, update, CollectionName);