Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Strength
MGREEFFECTOR_STRENGTH
Parameter: Selection
MGREEFFECTOR_SELECTION
Parameter: Effectors
MGREEFFECTOR_EFFECTORS
Parameter: Position
MGREEFFECTOR_POSITION
Parameter: Position Strength
MGREEFFECTOR_POSITION_STRENGTH
Parameter: Position.X
MGREEFFECTOR_POSITION_X
Parameter: Position.X Strength
MGREEFFECTOR_POSITION_STRENGTH_X
Parameter: Position.Y
MGREEFFECTOR_POSITION_Y
Parameter: Position.Y Strength
MGREEFFECTOR_POSITION_STRENGTH_Y
Parameter: Position.Z
MGREEFFECTOR_POSITION_Z
Parameter: Position.Z Strength
MGREEFFECTOR_POSITION_STRENGTH_Z
Parameter: Rotation
MGREEFFECTOR_ROTATION
Parameter: Rotation Strength
MGREEFFECTOR_ROTATION_STRENGTH
Parameter: Rotation.H
MGREEFFECTOR_ROTATION_H
Parameter: Rotation.H Strength
MGREEFFECTOR_ROTATION_STRENGTH_H
Parameter: Rotation.P
MGREEFFECTOR_ROTATION_P
Parameter: Rotation.P Strength
MGREEFFECTOR_ROTATION_STRENGTH_P
Parameter: Rotation.B
MGREEFFECTOR_ROTATION_B
Parameter: Rotation.B Strength
MGREEFFECTOR_ROTATION_STRENGTH_B
Parameter: Scale
MGREEFFECTOR_SCALE
Parameter: Scale Strength
MGREEFFECTOR_SCALE_STRENGTH
Parameter: Scale.X
MGREEFFECTOR_SCALE_X
Parameter: Scale.X Strength
MGREEFFECTOR_SCALE_STRENGTH_X
Parameter: Scale.Y
MGREEFFECTOR_SCALE_Y
Parameter: Scale.Y Strength
MGREEFFECTOR_SCALE_STRENGTH_Y
Parameter: Scale.Z
MGREEFFECTOR_SCALE_Z
Parameter: Scale.Z Strength
MGREEFFECTOR_SCALE_STRENGTH_Z
Parameter: Color
MGREEFFECTOR_COLOR
Parameter: Color Strength
MGREEFFECTOR_COLOR_STRENGTH
Parameter: Color.R
MGREEFFECTOR_COLOR_R
Parameter: Color.R Strength
MGREEFFECTOR_COLOR_STRENGTH_R
Parameter: Color.G
MGREEFFECTOR_COLOR_G
Parameter: Color.G Strength
MGREEFFECTOR_COLOR_STRENGTH_G
Parameter: Color.B
MGREEFFECTOR_COLOR_B
Parameter: Color.B Strength
MGREEFFECTOR_COLOR_STRENGTH_B
Parameter: Weight
MGREEFFECTOR_WEIGHT
Parameter: Weight Strength
MGREEFFECTOR_WEIGHT_STRENGTH
Parameter: Modify Clone
MGREEFFECTOR_CLONE
Parameter: Clone Strength
MGREEFFECTOR_CLONE_STRENGTH
Parameter: Time
MGREEFFECTOR_TIME
Parameter: Time Strength
MGREEFFECTOR_TIME_STRENGTH
Parameter: U Transform
MGREEFFECTOR_U
Parameter: U Strength
MGREEFFECTOR_U_STRENGTH
Parameter: V Transform
MGREEFFECTOR_V
Parameter: V Strength
MGREEFFECTOR_V_STRENGTH
Parameter: Visiblity
MGREEFFECTOR_VISIBILITY
Parameter: Visibility Strength
MGREEFFECTOR_VISIBILITY_STRENGTH