Loads are transferred to ROBOT with a load case number predefined in Revit. The load case number is not easily adjustable.
To modify a load case number in Revit after it has been created, it is necessary to add the following buttons to the "Structural parameters/load cases" dialogue box:
Up" and "Down" buttons: Buttons used to move the selected row up or down to obtain the desired load case number.
Rename" button: Button used to rename the selected line to a new load case number (not used).

Thank you in advance,
Nader ASSAF