Custom Command through Comm Links

Hi

I want to send a command using the Custom Command Widget to an arduino connected through a Comm Links.

But the Custom Command Widget i think that sends the command to the vehicle->id(). This widget let me configure the component id but not the system id.

Can someone help me?

Thank you so much

You can only send things to the currently active vehicle

But there is have to be a multivehicle option not?