CHOPnet cook within ForEach problem

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So I went through Peter's cool tutorial at:

http://www.sidefx.com/images/stories/tutorials/spring_sop/4.chops_animation_curve.mov [sidefx.com]

which extracts a curve from a NURBs surface and uses CHOPs to animate a sphere along it.

I figured this would be an interesting thing to expand to an arbitrary number of curves and spheres using the ForEach SOP, but it doesn't seem to work. Basically when I put the CHOPnet into the ForEach SOP it only seems to cook the CHOPnet for the first iteration, meaning all the spheres are moved along the first curve only.

If I do the exact same setup but use a “point” expression in the subnet to animate the spheres, rather than an exported CHOPs channel, it works great. See attached file.

Am I doing something wrong? Should this work?

Thanks

Attachments:
foreach_CHOPnet.hipnc (70.8 KB)

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