Young's modulus for deformable object

Hello, may I set young’s modulus for the deformable object? I want to make a cable and the current deformable object is like jelly and too soft for me

You need to create a deformable material, which has the Young’s, and then assign it to the deformable body object. See

Thanks for your reply! Can I also set Young’s in PhysX4.1 or Flex? by creating a deformable material?

PhysX 4.1 doesn’t feature deformables. Flex features shaped matched deformables, which are controllable via stiffness IIRC.