Float Parameters

Float parameters are, for the most part, the best parameter type to use: they are the most flexible, have priority*, get smoothed over the network (if under priority*), and the easiest to setup parameter. Float parameters have the ability to be used in Blend Trees, which gives them the ability to blend between multiple animations at a time.

*Priority is an attribute given to a Float parameter which makes it operate under IK Sync, the fastest network sync available in VRChat. Only float parameters and only up to 8 of them can operate in this mode.

Float parameters are typically driven with a Blend Tree, such as the one pictured below:

There are multiple Float parameters that are given in an X and Y distinction, and using a 2D Blend Tree is the best way to control these parameters. Here is an example of how you would drive such a parameter: