ZBrushCentral

crease border not activating

I’m trying to learn through immitation. I am trying to simulated the actions from “discovering Zbrush” a video on you tube.
At time 2:30:16 Paul Gaboury creases the to be scale. When I press the crease button nothing happens. If I hit crease all then the item looks similar to the video, but if I go that direction thing go haywire.
So why is my crease switch not responding.

adjust the ctolerance slider right under the ‘crease button’

the ctolerance slider creases by degrees

Thank you very much. This solved the problem.