Move Particles to Origin

I’m attempting to have a sphere of particles that spawn along the surface of that sphere that moves in towards the origin of the static mesh its attached to.

I am capable of spawning particles on the surface of the sphere, but how would I go about making their velocities target the origin?

Already figured out what I needed to do, I needed to set the velocity scale on the Sphere location node to -1 to make the particles move toward the center.