I confirm that a command prompt does not work. Test the command line with a shortcut. In the shortcut target, give the full command line, f.i. "C:\program files\Zorro\Zorro.exe" -trade Z2fx. This will be fixed in the next version - it will then also work from a command prompt.

For externally setting strategy parameters such as margin, risk etc. use the method under "Tips & Tricks" for reading parameters from external files. The program that starts Zorro can then also write the parameter values into that file.