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I'm trying to get these two objects to move towards each other after they hit the ground. Blend solvers are being used to allow the objects to transition between their keyframed positions and dynamic states and I need to add an attractive force which is what the spring constraint is supposed to be for. If I plug it in and doing nothing to it outside of hooking up the constrained object and the goal object it works fine. However, I want to control the timing of it so it can work it into an animation. When I tried to keyframe the spring strength or activation parameters the constraint would stop working or not work properly.

Result from keyframing the activation parameter. The objects do not pull towards each other, the constraint just keeps them in place.

SpringConstraintTest-4.thumb.gif.ae0e5d7734daff6b8d6b92d7fa5985cf.gif

Node network

image.png.766a838eb833aa5b37b1baac5f74bf09.png

Does anyone know why this is happening? Thanks in advance!   

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