Export objects by commandline

Hi,

I hope some1 can help.

I did this for NAV 2015 long ago (or similar):

finsql.exe command=exportobjects, servername=EC1DEVDB01, database=Test_March_17, file "c:\temp\testfob.txt", filter="Modified=Yes;Date=+echo %date%",ntauthentication=yes

For some reason in NAV2009 classic client, it keeps telling me "the program command property is not recognised". Is it not supported for this version?

Any ideas?
thanks.