loom tutorial

Hello 

I encounter problems doing Zubin Khabazi's tutorial loom on "generative algorithms concepts ans experiments weaving". Anybody worked on it?

I defined a surface in rhino on which the pattern should weave.

I set the fx expression to x-1 as in the tutorial, but all the connectors from the iso curve component become dotted. What is wrong

Here are the gh definition and the rhino file. 

Please help!

Thank you.loom.gh

loom.3dm