Programmatic Simscape Multibody Model: How to set the initial State Targets of joints?

Hi guys!

I'm using programming to build a Simscape Multibody model. The model is a Stewart platform with six prismatic legs. However, when I use the OperatingPoint object to limit the initial position of the joint to 0 m:

op = OperatingPoint;
for i = 1:6
    op(sprintf('Leg%d_Prismatic/X/q', i)) = simscape.op.Target(0, 'm', 'High');
end

the program doesn't work.

The entire code is running normally without any warning, but the initial position of the prismatic joint is not 0 m.

The entire codes are attached below. Please help me if you are professional in programmatic modeling. Thanks a lot!

[Yifeng Tang]

Just to make sure, you've enabled the operating point initialization in Model Settings or through command line, right?

I didn't see that in your code, so just to make sure.

If so and the problem persists, the best next step is to build a very simple mechanism to reproduce the problem. Upload the model and script then so the community can better diagnose.