Hello dear Mikrotik users

I have a problem using ssh-exec command.

I'm trying to remotely execute SSH command from a Mikrotik RB2011 router to an Aruba cisco switch.
I used the following commands line : The return of this commands is :
exit-code: 0
output: SSH command execution is not supported.

Does anyone have a solution to that ?
I was wondering that there is no difference between using ssh-execution commands from the Mikrotik routers and manually connect to SSH switch with putty.

Thanks,