G8 built-in muscle flexion?
So, I installed the new G8 figure yesterday, and was really excited to see this built-in muscle flexion in action.
I tried bending the elbow joint back an forth, up and down, and didn't really see any change. When bending the arm back the triceps seems to bulge a bit, but the biceps is completly passive then bendin the other way.
Am I totally misunderstanding what this system is supposed to do? Does something have to be activated for the flexing to work?
I'm refering to this feature of the new G8 figure(s):
ARTICULATION AND FLEXING
No matter how life-like a figure is, it requires the ability to move in a realistic way. More organic bends and articulation have been integrated across the figure including in the abdomen, shoulder and collar. To make those movements even more realistic, Genesis 8 includes built in flexing of major muscle groups as the figure bends and poses.

Comments
Also, tried to apply the bodybuilder morph to have the biceps be defined and very visible, but couldn't really see any noticable change.
The bicep flexion doesn't depend on musculature morphs like bodybuilder and such (yes, it's silly but that's how it's implemented). Basically it depends on forearm's bend and shoulder's twist multiplied, so to see it fully you have to fully bend forearm and fully twist shoulder so hand will point up. But wait, in this position bicep is hidden because of self-intersection of arm's skin and bicep's flexion is invisible !?.. Yes, it's silly but it's DAZ :)
If you want to see flexion effect, bend forearm BACKWARD, then you can see tricep flexing... a little. Use "Base flexing" parameter in G8Fs "General/Misc" section to quickly turn flexion on/off.
Thanks for your reply. Will try this with the forearm set as invisible later :P Kinda lame if the flexing isn't visible until the forearm is overlapping with the upper arm.
Yeah, I just turned it on to see the biceps "muscle" itself clearly. Didn't notice any movement.