The SetJointPositions function is not working in Gazebo 1.2

edit

I did something similar in a c++ model plugin.

I have a private member variable of type

private: physics::JointController * j2_controller;

Which is initialized in the Load(physics::ModelPtr _parent, sdf::ElementPtr _sdf) function as follows

// Initialize the JointController with the model pointer
    this->j2_controller = new physics::JointController(_parent);

In, for instance, the OnUpdate() function, I have code that boils down to this:

double angle(0.0);
std::string j2name("j2name");    
j2_controller->SetJointPosition(j2name,angle);

However, my model is dynamic--I'm not sure if this would work to animate a static model. Hope that helps.