Can you double-check exactly what you put in? You could also try it as it stands (with the 8.60). Things to watch are comma not fullstop/decimal point, letter o not digit 0, letter I not digit 1, extra space in there somewhere it shouldn't be. I only say this because I'm pretty sure I've made all these errors over the years! A mis-type is sometimes difficult to spot.

A useful trick when testing - put your height plate on a block of foam. This gives you the time to react and hit the e-stop if it all goes pear-shaped! For the same reason, for testing, I often use a bit of flat-ended rod (or even a tool in the collet the wrong way round) so you are more likely to stall the machine than drive a tool through the bed. Again, I am ashamed to say I speak from experience...