Can I have a customised solver work along with the TGS solver?

[BBBBBbruce]

I have a customised simulation with 1. custom dynamics of particles and 2. a self-defined integrator/solver for this type of dynamics. I want to use PhsyX for rigid dynamics and collision detection. Could anyone provide me with some insights on what is my best choice to do this?

From what I found, I am trying to integrate my method into PhysX:

1. class MyActor : public PxActor{};
2. class MySolver : public PxConstraintSolverCallback{};

I am not sure if I can set solver for some actors, the example in the Snippets shows that the solver is directly set to PxScene.