Bi-directional value linking, not Mimic

Is there a way to have a bi-directional link/expression between two different nodes, even a single channel, and not use Mimic link. For instance, lets say I have a Matchbox in the top level of Batch, but also the same Matchbox within an Action. I want a change in a particular field in either, to be reflected in each. So if I set value X=1 in node A, it changes in B. Or if I set value X=2 in B it is reflected in A.

Mimic link won’t work between these nodes since they are essential in different logical spaces.

No secondary python either. Must be automatic.

I’d expect the answer to be expressions since it is the only way to instantaneously telport values from one channel to another.

Unfortunately expressions work one way. I have wished for this every now and then. Should a feature request.

1 Like

You’re restricting your approach to two channels.
build the matchboxa s if you were building a HUD in any sensible piece of 3d software.
build a controller, and have subordinate nodes accept the channel changes of the controller node.
Context views means this is trivial.

not if I want to be able to control something at multiple levels.

I suppose I could have multi-viewport up with top-level Batch up where the “controller” is, and then second view with whatever I’m working on. But I don’t work that way.

but you can
i lament that we never got HUDs
I always loved sliders in SoftImage and Lightwave

agreed.

1 Like

head up display with sliders please