Custom fields not showing on statement

I have added the custom fields in sales invoice lines , but when I run the statement report , custom fields don’t show. I have checked the box for to show the theme. If someone knows how to do this please help .

Assuming you mean the Customer Statements(Unpaid Invoices) or Customer Statements(Transactions) report in the Reports tab, these reports show the transactions on the customer’s account - invoices, credit notes, receipts and payments.

But they only show the header information for these transactions, no line items are shown nor are intended to be shown so custom fields in sales invoices lines are certainly not shown