Can I do sidebar-toggle in --play?

[cool-RR]

I have a process that launches VisiData with a certain --play 1.vdj. I want the last command to clear the sidebar because there are messages there that are not interesting.

I tried to add this line at the end:

{"col": "", "row": "", "longname": "sidebar-toggle", "input": "", "keystrokes": "Ctrl+B", "comment": ""}

But it seems to have no effect.

Any idea if this is possible?