BASIC 10.0 command GRAPHIC - how to use it?

Hi!

I'm owner of Mega 65, for now better to say Nexys4DDR and there have running few computer cores incl. M65

I need to set any graphic mode - tried to use GRAPHIC command and failed.
When I add any parameter, always reports SYNTAX ERROR.
When I enter GRAPHIC only without any parameter, M65 and also MESS emulator hanging.

Where I do mistake? I mean this Basic command must to be implemented - in case of Basic 10.0 many times than SYNTAX ERROR user see UNIMPLEMENTED COMMAND ERROR...

Thank you for help.
Miro

Thank you.
Miro