The new parameter from a multi-column data file is then added to the parameter section of your script.
The multi-column data file you selected is also added to your project's data files.
If you opened the wizard via the context menu in your script, the value you selected is automatically replaced with the newly created variable.
Launch the wizard as often as is required to create more randomized variables. If you launched the wizard via another method, replace the constant values in your script with the BDL variables you created.