Dynamic Member Filter

A#Trade_Receivables_Net:Name(Accounts receivable, net of allowances for credit losses of $36 on April 30, 2022 and $107 on April 30, 2021)

I am hard-coding the line/name : Accounts receivable, net of allowances for credit losses of $36 on April 30, 2022 and $107 on April 30, 2021 to show up on the report as you can in the second image. How can I create a form that I can input a value into for April 30, 2022 or April 30, 2021 or whatever other date? I want that form to populate into this line item. Where do I start to achieve this?
