How to get all the children from grandfather - JSON

[tadrian]

I am trying to get all the items in the joindown_PriceAndDiscountMatrix_via_Product array but it is not working.

{{map(3.data.data.useCompany.product.items; joindown_PriceAndDiscountMatrix_via_Product.items)}}

I have tried the following

• using items [ ] instead of items
• surrunding the code with flatten(…)

Both the items[ ] has the raw value of items