Morphia Add item to embedded

I have the following structures. Products is embedded in Store; and reviews is embedded in product.

1- Store

I am trying to add a new item to review with the following code. It doesn't give me an error but neither does it add it.

Query q1=ds.createQuery(Product.class).filter("Code", code);
    ops = ds.createUpdateOperations(Product.class).add("Reviews", review);
    ds.update(q1, ops);


I figured it out. The only was is query for the embedded product, modified it by adding a new review and update that product with ds.CreateUpdateOperations().Set(ops)

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