Using the VRC Avatar Parameter Drive to copy an animated parameter in an animator to a VRC Parameter does not work. Tested copying VRC parameter to another VRC Parameter, and that works. Tested copying an animated parameter to VRC Parameter in Unity editor using gesture manager and that works too. Tested on an otherwise empty avatar without any VRCFury or other addons modifying the upload process. To create a test, follow these instructions: * Create a VRC Parameter component with the following 3 parameters and add to an empty avatar. VRC_Input (Float), VRC_Output (Float), VRC_InRadial (Bool). * Create a VRC Menu component and add two radials. Name one Input, and set parameter to VRC_InRadial, and rotation to VRC_Input. Name the other Output and set rotation to VRC_Output * Create a Unity animator with all 3 VRC parameters as well as a new "Animated Property" float parameter. * Create an animation animating the "Animated Property" from 0 to 1. Have this animation as the only animation in its own layer in the animator, and set the Motion Time to VRC_Input (Thus the Input Radial in our menu will animate the "Animated Property" parameter). * Create another layer with two states, name one "In Radial" and the other "Outside of Radial". * Create a transition from "In Radial" to "Outside of Radial" and set the condition to VRC_InRadial == False. Then create another transition back to "In Radial" with the condition VRC_InRadial == True. * Finally add a VRC Avatar Parameter Driver to the "Outside of Radial" state, set the type to Copy, the Source to Animated Property, and the Destination to VRC_Output. Upload and test. Expected behavior: Adjusting the Input radial will update the animated property, and when exiting the input radial, the animated property is copied onto the Output parameter and thus visible on the output radial menu item. Actual behavior: The VRC_Output parameter is not updated when exiting the Input radial. Adjusting the VRC Avatar Parameter Driver on "Outside of Radial" state to copy from VRC_Input instead of Animated Property, then re-uploading the avatar, shows that copying from VRC parameters works. NOTE: It may appear that the Animated Property is not being adjusted by VRC_Input if you view the Debug Menu ingame. However, creating a third layer with an animation that animates anything visible on the avatar (lets say the scale of a cube or color of a material) and then setting the motion time on that animation to Animated Property proves that the value is still updated. This strange behavior might point to the cause of this bug.