Access and modify SB phisics BGE script

Hello to everybody, I’m here to ask something again about SoftBodies. I’ve been inspecting the dir of a SoftBody object, but I havent found any of it phisic properties, such as Lineas Stiffness, Margin or the Threshold for Shape Match. I’m affraid, for what Im looking in the dir() that you only can modify its properties as a RigidBody, for example it mass. So the question is if there is any way to set the stiffness of a Softbody before it starts the simulation or if there is a way to modify it during the simulation. Though I think that this last option is not possible.

Thanks a lot for your time.