I have used Report MRP BOM Matrix Module with Odoo 11.
https://github.com/OCA/manufacture-reporting/tree/11.0/mrp_bom_matrix_report

It can generate such a matrix BOM with '1' for product used in BOM.
But I would like it to show the actual product quantity used in BOM instead of '1'.
https://1drv.ms/u/s!AmVzh-zf2E2Hhk5X4PK5gAY4K2CT
https://1drv.ms/u/s!AmVzh-zf2E2Hhk23sK8dXzHSVwQE

I believe that I need to modify "count_parent_usage" field in the following model to show product quantity.
https://github.com/OCA/manufacture-reporting/blob/11.0/mrp_bom_matrix_report/models/mrp_bom_matrix_report.py

I try to modify it, but without success. The SQL query is very confusing for me.
Can anyone help me?