Helix path inside sphere

[[Ja...]]

I am trying to run a helical path inside a small half sphere. In the strategy of the sphere, I can select "Helix path". The automatic path shown goes up from Z-0, instead of down into the sphere. Target height is .0815. I can change that to -.0815 and the path switches down into the sphere. But I think it is still looking for the outside of a sphere and my probe crashes outside the edge of the sphere on my Z-0 plane. I'm sure it's just a matter of changing something to make the probe look for the inside of a sphere, but I can't figure it out. Any help would be appreciated.