I'm just getting starting with Houdini, so it's quite possible that I've made a rookie mistake.

However, I'm having trouble getting this tutorial to work consistently. I am painting the length of fur with a brush, and when turning on the display flag for either the paint node or the following guideprocess node, I can see the masked fur length.

However, after selecting the guideprocess node itself, all the fur gets set to the same length again.

Additionally, when going back to the paint_length node, the painting job is not visible until I click on the object with the brush tool again.

Any idea what may be happening?

Thanks,
Adam