How to get request page value in navision report?

For getting the value whatever selected by end user on request page of report we use "GETFILTER" function.

Syntax : <Table Name>.GETFILTER(<Field Name>);
Example:

MESSAGE(FORMAT("Bank Account Ledger Entry".GETFILTER("Posting Date")));

it will shows posting date for 'Bank Account Ledger Entry' table selected by user.