How to create Arrays of attribute inside an attribute

Hai i am new with appwrite i want to create a structure like

{ "user_name": "test", "age": 100, "ishuman": false, "orders": [ { "order_id": 90909, "item_name": "alien food", "item_price": 789 } ] }

i cam create others attributes but how to create orders attribute

You should create an orders collection

I have already created but i can add it which attribute to choose ?

What do you mean?

You can't have an attribute inside an attribute

Alternatively you can have relationships between collections or use foreign keys

{ "user_name": "test", "age": 100, "ishuman": false, "orders": [ { "order_id": 90909, "item_name": "alien food", "item_price": 789 } ] }

so this is not possible ?