Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Transform
ID_CA_CONSTRAINT_TAG_PSRParameter: Parent
ID_CA_CONSTRAINT_TAG_PARENTParameter: Up
ID_CA_CONSTRAINT_TAG_UPParameter: Aim
ID_CA_CONSTRAINT_TAG_AIMParameter: Clamp
ID_CA_CONSTRAINT_TAG_CLAMPParameter: Spring
ID_CA_CONSTRAINT_TAG_SPRINGParameter: Mirror
ID_CA_CONSTRAINT_TAG_MIRRORParameter: Collision
ID_CA_CONSTRAINT_TAG_COLLISIONParameter: Frame Update
ID_CA_CONSTRAINT_TAG_FRAMEUPDATEParameter: Set Initial State
ID_CA_CONSTRAINT_TAG_SET_INITIAL_STATEParameter: Use Initial State
ID_CA_CONSTRAINT_TAG_USE_INITIAL_STATEParameter: P
ID_CA_CONSTRAINT_INITIAL_STATE_VECTOR_PParameter: R
ID_CA_CONSTRAINT_INITIAL_STATE_VECTOR_RParameter: S
ID_CA_CONSTRAINT_INITIAL_STATE_VECTOR_SParameter: Strength
ID_CA_CONSTRAINT_TAG_PARENT_TWEIGHTParameter: Use Frozen
ID_CA_CONSTRAINT_TAG_PARENT_FROZENParameter: Auto Reset (Legacy)
ID_CA_CONSTRAINT_TAG_PARENT_RESETParameter: Interactive Transform
ID_CA_CONSTRAINT_TAG_PARENT_INTERACTIVEOFFSETParameter: Maintain Original
ID_CA_CONSTRAINT_TAG_PARENT_MAINTAINParameter: P
ID_CA_CONSTRAINT_TAG_PARENT_P_OFFSETParameter: R
ID_CA_CONSTRAINT_TAG_PARENT_R_OFFSETParameter: S
ID_CA_CONSTRAINT_TAG_PARENT_S_OFFSETParameter: Add
ID_CA_CONSTRAINT_TAG_PARENT_ADDParameter: Remove
ID_CA_CONSTRAINT_TAG_PARENT_REMOVEParameter: Target
ID_CA_CONSTRAINT_TAG_PARENT_LINKParameter: Weight
ID_CA_CONSTRAINT_TAG_PARENT_WEIGHTParameter: P
ID_CA_CONSTRAINT_TAG_PARENT_PParameter: R
ID_CA_CONSTRAINT_TAG_PARENT_RParameter: S
ID_CA_CONSTRAINT_TAG_PARENT_SParameter: P
ID_CA_CONSTRAINT_TAG_PARENT_P_LOCALTRANFORMParameter: R
ID_CA_CONSTRAINT_TAG_PARENT_R_LOCALTRANFORMParameter: Order
ID_CA_CONSTRAINT_TAG_PARENT_LOCALTRANFORM_ROTORDERParameter: S
ID_CA_CONSTRAINT_TAG_PARENT_S_LOCALTRANFORMParameter: ID_CA_CONSTRAINT_TAG_PARENT_LOCALTRANFORM_UPDATEBUTTON
ID_CA_CONSTRAINT_TAG_PARENT_LOCALTRANFORM_UPDATEBUTTONParameter: ID_CA_CONSTRAINT_TAG_PARENT_LOCALTRANFORM_RECORDBUTTON
ID_CA_CONSTRAINT_TAG_PARENT_LOCALTRANFORM_RECORDBUTTONParameter: Strength
ID_CA_CONSTRAINT_TAG_PSR_TWEIGHTParameter: Maintain Original
ID_CA_CONSTRAINT_TAG_PSR_MAINTAINParameter: P
ID_CA_CONSTRAINT_TAG_PSR_P_OFFSETParameter: R
ID_CA_CONSTRAINT_TAG_PSR_R_OFFSETParameter: S
ID_CA_CONSTRAINT_TAG_PSR_S_OFFSETParameter: P.X
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_P_XParameter: R.H
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_R_XParameter: S.X
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_S_XParameter: P.Y
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_P_YParameter: R.P
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_R_YParameter: S.Y
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_S_YParameter: P.Z
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_P_ZParameter: R.B
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_R_ZParameter: S.Z
ID_CA_CONSTRAINT_TAG_PSR_CONSTRAIN_S_ZParameter: Local P
ID_CA_CONSTRAINT_TAG_LOCAL_PParameter: Local R
ID_CA_CONSTRAINT_TAG_LOCAL_RParameter: Local S
ID_CA_CONSTRAINT_TAG_LOCAL_SParameter: Add
ID_CA_CONSTRAINT_TAG_PSR_ADDParameter: Remove
ID_CA_CONSTRAINT_TAG_PSR_REMOVEParameter: Target
ID_CA_CONSTRAINT_TAG_PSR_LINKParameter: Weight
ID_CA_CONSTRAINT_TAG_PSR_WEIGHTParameter: P
ID_CA_CONSTRAINT_TAG_PSR_PParameter: R
ID_CA_CONSTRAINT_TAG_PSR_RParameter: S
ID_CA_CONSTRAINT_TAG_PSR_SParameter: Strength
ID_CA_CONSTRAINT_TAG_MIRROR_TWEIGHTParameter: P
ID_CA_CONSTRAINT_TAG_MIRROR_P_OFFSETParameter: R
ID_CA_CONSTRAINT_TAG_MIRROR_R_OFFSETParameter: Add
ID_CA_CONSTRAINT_TAG_MIRROR_ADDParameter: Remove
ID_CA_CONSTRAINT_TAG_MIRROR_REMOVEParameter: Target
ID_CA_CONSTRAINT_TAG_MIRROR_LINKParameter: Weight
ID_CA_CONSTRAINT_TAG_MIRROR_WEIGHTParameter: Position
ID_CA_CONSTRAINT_TAG_MIRROR_PParameter: Rotation
ID_CA_CONSTRAINT_TAG_MIRROR_RParameter: Object
ID_CA_CONSTRAINT_TAG_MIRROR_ORIGIN_LINKParameter: Origin
ID_CA_CONSTRAINT_TAG_MIRROR_ORIGINParameter: Plane
ID_CA_CONSTRAINT_TAG_MIRROR_PLANEParameter: Axis
ID_CA_CONSTRAINT_TAG_MIRROR_AXISParameter: Strength
ID_CA_CONSTRAINT_TAG_CLAMP_TWEIGHTParameter: Draw Clamp
ID_CA_CONSTRAINT_TAG_CLAMP_SHOWParameter: Color
ID_CA_CONSTRAINT_TAG_CLAMP_COLORParameter: Add
ID_CA_CONSTRAINT_TAG_CLAMP_ADDParameter: Remove
ID_CA_CONSTRAINT_TAG_CLAMP_REMOVEParameter: Target
ID_CA_CONSTRAINT_TAG_CLAMP_LINKParameter: Lock Position
ID_CA_CONSTRAINT_TAG_CLAMP_STICKParameter: Use Normals
ID_CA_CONSTRAINT_TAG_CLAMP_NORMALSParameter: Weight
ID_CA_CONSTRAINT_TAG_CLAMP_WEIGHTParameter: Distance
ID_CA_CONSTRAINT_TAG_CLAMP_DISTANCEParameter: To
ID_CA_CONSTRAINT_TAG_CLAMP_TOParameter: Mode
ID_CA_CONSTRAINT_TAG_CLAMP_MODEParameter: Align
ID_CA_CONSTRAINT_TAG_CLAMP_ALIGNParameter: As
ID_CA_CONSTRAINT_TAG_CLAMP_ALIGN_TOParameter: Axis
ID_CA_CONSTRAINT_TAG_CLAMP_AXISParameter: Plane
ID_CA_CONSTRAINT_TAG_CLAMP_PLANEParameter: Strength
ID_CA_CONSTRAINT_TAG_SPRING_TWEIGHTParameter: Drag
ID_CA_CONSTRAINT_TAG_SPRING_DRAGParameter: Gravity
ID_CA_CONSTRAINT_TAG_SPRING_GRAVITYParameter: P
ID_CA_CONSTRAINT_TAG_SPRING_P_OFFSETParameter: R
ID_CA_CONSTRAINT_TAG_SPRING_R_OFFSETParameter: S
ID_CA_CONSTRAINT_TAG_SPRING_S_OFFSETParameter: Add
ID_CA_CONSTRAINT_TAG_SPRING_ADDParameter: Remove
ID_CA_CONSTRAINT_TAG_SPRING_REMOVEParameter: Position
ID_CA_CONSTRAINT_TAG_SPRING_PParameter: Rotation
ID_CA_CONSTRAINT_TAG_SPRING_RParameter: Scale
ID_CA_CONSTRAINT_TAG_SPRING_SParameter: Target
ID_CA_CONSTRAINT_TAG_SPRING_LINKParameter: Weight
ID_CA_CONSTRAINT_TAG_SPRING_WEIGHTParameter: Length
ID_CA_CONSTRAINT_TAG_SPRING_LENGTHParameter: Stiffness
ID_CA_CONSTRAINT_TAG_SPRING_STIFFNESSParameter: Strength
ID_CA_CONSTRAINT_TAG_AIM_TWEIGHTParameter: Maintain Original
ID_CA_CONSTRAINT_TAG_AIM_MAINTAINParameter: Offset
ID_CA_CONSTRAINT_TAG_AIM_OFFSETParameter: H
ID_CA_CONSTRAINT_TAG_AIM_CONSTRAIN_XParameter: P
ID_CA_CONSTRAINT_TAG_AIM_CONSTRAIN_YParameter: B
ID_CA_CONSTRAINT_TAG_AIM_CONSTRAIN_ZParameter: Add
ID_CA_CONSTRAINT_TAG_AIM_ADDParameter: Remove
ID_CA_CONSTRAINT_TAG_AIM_REMOVEParameter: Target
ID_CA_CONSTRAINT_TAG_AIM_LINKParameter: Weight
ID_CA_CONSTRAINT_TAG_AIM_WEIGHTParameter: Axis
ID_CA_CONSTRAINT_TAG_AIM_AXISParameter: Strength
ID_CA_CONSTRAINT_TAG_UP_TWEIGHTParameter: Maintain Original
ID_CA_CONSTRAINT_TAG_UP_MAINTAINParameter: Offset
ID_CA_CONSTRAINT_TAG_UP_OFFSETParameter: H
ID_CA_CONSTRAINT_TAG_UP_CONSTRAIN_XParameter: P
ID_CA_CONSTRAINT_TAG_UP_CONSTRAIN_YParameter: B
ID_CA_CONSTRAINT_TAG_UP_CONSTRAIN_ZParameter: Add
ID_CA_CONSTRAINT_TAG_UP_ADDParameter: Remove
ID_CA_CONSTRAINT_TAG_UP_REMOVEParameter: Up Vector
ID_CA_CONSTRAINT_TAG_UP_AXISParameter: Axis
ID_CA_CONSTRAINT_TAG_UP_ROT_AXISParameter: Target
ID_CA_CONSTRAINT_TAG_UP_LINKParameter: Weight
ID_CA_CONSTRAINT_TAG_UP_WEIGHTParameter: Strength
ID_CA_CONSTRAINT_TAG_COLLISION_TWEIGHTParameter: ID_CA_CONSTRAINT_TAG_COLLISION_TARGETS
ID_CA_CONSTRAINT_TAG_COLLISION_TARGETS