For years I have been using a function - ros_command(":put [/system health get voltage]") and it has worked great. I upgraded some of the devices to v7 and things have changed.
Now on a powerbox pro is use :put [/system health get [find where name=voltage] value] in terminal and it works fine.
In the dude the function: ros_command(":put [/system health get [find where name=voltage] value]") returns a parse error.
I'm running version 7.9 dude server and 7.8 on the power box pro.