How to drive spine joint in facet joint Model?

Hello,

I read all the posts regarding driving a spine joints. However, they only mention to refer to the SpineFixationWithFDK. I read the driver carefully for that part. However, when I want to drive spine joints on FacetjointsModel. What I did is to set #define BM_SPINE_RHYTHM OFF in main file. And add the following drivers in Model/JointsAndDriversSimple.any. The Model give no errors, but the spine does not move, too. Does anyone knows how to solve this problem?

//Neck driver
AnyKinEqSimpleDriver NeckJntDriver = {
AnyRevoluteJoint &T12L1Joint = …RefHM.Interface.Trunk.NeckJoint;
DriverPos = pi/180*{0};
DriverVel = pi/180*{0};
Reaction.Type = {Off};
};

//Spine joints
AnyFolder &refJoints = …HumanModel.Trunk.JointsLumbar;
AnyFolder &JntPos=…Mannequin.Posture;
AnyFolder &JntVel=…Mannequin.PostureVel;

AnyKinEqSimpleDriver LumbarT12L1 =
{
AnySphericalJoint &jntt12l1 = .refJoints.T12L1Jnt;
DriverPos = pi/180*{0.17725, 0.0, 0.0};
DriverVel = pi/180*{0.0, 0.0, 0.0};
Reaction.Type = {Off, Off, Off};

};
AnyKinEqSimpleDriver LumbarL1L2 = 

{
AnySphericalJoint &jnt12 = .refJoints.L1L2Jnt;
DriverPos = pi/180*{0.17725, 0.0, 0.0};
DriverVel = pi/180*{0.0, 0.0, 0.0};
Reaction.Type = {Off, Off, Off};

};

AnyKinEqSimpleDriver LumbarL2L3 = 

{
AnySphericalJoint &jnt23 = .refJoints.L2L3Jnt;
DriverPos = pi/180*{0.17725, 0.0, 0.0};
DriverVel = pi/180*{0.0, 0.0, 0.0};
Reaction.Type = {Off, Off, Off};

};

AnyKinEqSimpleDriver LumbarL3L4 = 

{
AnySphericalJoint &jnt34 = .refJoints.L3L4Jnt;
DriverPos = pi/180*{0.17725, 0.0, 0.0};
DriverVel = pi/180*{0.0, 0.0, 0.0};
Reaction.Type = {Off, Off, Off};

};

AnyKinEqSimpleDriver LumbarL4L5 =
{
AnySphericalJoint &jnt45 = .refJoints.L4L5Jnt;
DriverPos = pi/180*{0.17725, 0.0, 0.0};
DriverVel = pi/180*{0.0, 0.0, 0.0};
Reaction.Type = {Off, Off, Off};

};

 AnyKinEqSimpleDriver SacrumPelvisDriver = {
AnySphericalJoint &Jnt = Main.HumanModel.BodyModel.Trunk.JointsLumbar.SacrumPelvisJnt;
DriverPos = pi/180*{0.0, 0.0, 0.0};

DriverVel = pi/180*{0.0, 0.0, 0.0};
Reaction.Type = {Off, Off, Off};
};

Hi Amin,

I see that you drive it with very small angles. Everything else being 0. Could it be that you simply do not see this small motion?

As well as that could you double-click on your study to see what drivers are switched on? To check that these drivers are included and there is not spine rhythm driver.

Kind regards,
Pavel