Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Mode
ID_CA_MUSCLE_OBJECT_MODE
Parameter: State
ID_CA_MUSCLE_OBJECT_STATE
Parameter: Auto Volume
ID_CA_MUSCLE_OBJECT_AUTO_COMPRESS
Parameter: Auto Volume
ID_CA_MUSCLE_OBJECT_AUTO_EXTEND
Parameter: Length
ID_CA_MUSCLE_OBJECT_RELAX_LENGTH
Parameter: Length
ID_CA_MUSCLE_OBJECT_COMPRESS_LENGTH
Parameter: Length
ID_CA_MUSCLE_OBJECT_EXTEND_LENGTH
Parameter: Set
ID_CA_MUSCLE_OBJECT_STATE_SET
Parameter: Shape
ID_CA_MUSCLE_OBJECT_SHAPE_RELAX
Parameter: Shape
ID_CA_MUSCLE_OBJECT_SHAPE_COMPRESS
Parameter: Shape
ID_CA_MUSCLE_OBJECT_SHAPE_EXTEND
Parameter: Add
ID_CA_MUSCLE_OBJECT_ANCHORS_ADD
Parameter: Remove
ID_CA_MUSCLE_OBJECT_ANCHORS_REMOVE
Parameter: Auto Align
ID_CA_MUSCLE_OBJECT_AUTO_ALIGN
Parameter: Type
ID_CA_MUSCLE_OBJECT_TYPE
Parameter: Segment Count
ID_CA_MUSCLE_OBJECT_SEGMENTS_COUNT
Parameter: Radial Count
ID_CA_MUSCLE_OBJECT_RADIAL_COUNT
Parameter: Subdivision
ID_CA_MUSCLE_OBJECT_SUBD
Parameter: Segment Resolution
ID_CA_MUSCLE_OBJECT_SEGMENTS_RES
Parameter: Radial Resolution
ID_CA_MUSCLE_OBJECT_RADIAL_RES
Parameter: Transition
ID_CA_MUSCLE_OBJECT_SHAPE_TRANSITION
Parameter: Subdivision
ID_CA_MUSCLE_OBJECT_SUBD_CALC
Parameter: Direction
ID_CA_MUSCLE_OBJECT_DEFORM
Parameter: Fat Offset
ID_CA_MUSCLE_OBJECT_FATOFFSET
Parameter: Object
ID_CA_MUSCLE_OBJECT_DEFORM_DIRECTION_LINK
Parameter: Dynamics
ID_CA_MUSCLE_OBJECT_DYNAMICS
Parameter: On Frame
ID_CA_MUSCLE_OBJECT_DYNAMICS_FRAME
Parameter: Strength
ID_CA_MUSCLE_OBJECT_STRENGTH
Parameter: Stiffness
ID_CA_MUSCLE_OBJECT_STIFFNESS
Parameter: Structure
ID_CA_MUSCLE_OBJECT_STRUCTUAL_STIFFNESS
Parameter: Volume Stiffness
ID_CA_MUSCLE_OBJECT_VOLUME_STIFFNESS
Parameter: Drag
ID_CA_MUSCLE_OBJECT_DRAG
Parameter: Stiffness
ID_CA_MUSCLE_OBJECT_STIFFNESS_CURVE
Parameter: Gravity
ID_CA_MUSCLE_OBJECT_GRAVITY
Parameter: Forces
ID_CA_MUSCLE_OBJECT_FORCES
Parameter: Springs
ID_CA_MUSCLE_OBJECT_SPRINGS
Parameter: Iterations
ID_CA_MUSCLE_OBJECT_ITERATIONS