In the pdf, "Tax" column gives the tax name (for me it is "TVA collectée (vente) 19.6%" or "TVA collectée (vente) 5.5%")

I would like it to be just "19.6%" or "5.5%" so I put all the tax code (under the tax name in the tax view) with this kind of values.

In the "sale/report/sale_order.rml" file, I found on line 248:

[[ ', '.join(map(lambda x: x.name, line.tax_id)) ]]
 

I guess it is a script that go and get the name (since changing to tax_name, tax_code_id and so on did not do anything)

What could be a solution and/or where to find the script?