Illegal option specification exception

When executing in console mode, you can encounter the following error: joptsimple.IllegalOptionSpecificationException: $ is not a legal option character.

This is because the name of your global variables might contain special characters like $, or a space. For instance:

• Supported: -g_myVar="test"
• Not supported: -g_$myVar="test"

To solve this issue, we recommend giving global variables a name without $, and/or space.