Hi,
To make this work, you need to first figure out how to do this manually. When you have a working example on cmd or bash, you create a run script operator that uses your command line and replace the fixed values for variables (%1 %2 %3)
So if you have, for example:
robocopy C:\abc C:\def /MIR
it should be
robocopy %1 %2 /MIR
passing the parameters as this
Make sure you mark this options
So you can get the output in
Process[OpName].scriptOutput
This is the way to get things done in Process Automation.
Hope it helps