external_stage - the name of the gear force element
gear_force_1 - is the actual name of the gforce (hardcoded)
... and copy the name of "I Marker "
Further, enter the following command (single line) with appropriate names of objects:
geometry create shape force force_name=.gear_at_cyl_model.gear_force_graphics_i force_element_name=.gear_at_cyl_model.external_stage applied_at_marker_name=.gear_at_cyl_model.wheel.gear_part.gear_i
where:
gear_force_graphics_i - a unique name of the force graphics object
.gear_at_cyl_model.wheel.gear_part.gear_i - it is an I marker name of the gforce you got from the "list_info" command output
Please make sure that the "Applied Forces" and "Reaction Forces" are toggled ON in the Solver Settings, Category = Output, Output Category = Results (.res) Content
Hereafter run a simulation, animate results and scale the force and torque graphics as required (in the Main menu go to Setting -> Force Graphics).
I'll raise a request for such an enhancement to be implemented in the future release.