Access to filters settled in codeunit for report

Hello, I have one problem and would appreciate any advice according it. It is possibly customized part of NAV 3.60 but problem is rigorously of NAV C/SIDE. I have two reports “Material Write-Off Sheet Posted” and “Material Write-Off Sheet Unposted”. I need to make one report based on mentioned above. I did it already but cann’t do one thing - to determine place from where tis called. Without opportunity to change codeunit (implementation maintenance), i should determine what part of database query must be performed to initialise radio battons in the report form. All settled filters on tables used for report creation appear only during report creation but not when user dialog opened. Is it possible to retrieve this information before report running? It seems me convenient for user and to avoid incorrect data manage by this dataitem. And it surely may be done during report running. Thank you in advance, Anthony