Python in Blender 4.0

Hi All,

The Python code was not working for me on Blender 4.0 as there are no layers on this version anymore, it was replaced by Bone Collections. I know this is not a Python focused course, but its still fun to mess with it and useful in animation I think. So after fighting with it a bit I got it to work, replacing the following part of the code: 

        #Layers

        row = col.row()

        row.prop(context.active_object.data, "layers", index=0, toggle=True, text="Head")

        row = col.row()

        row.prop(context.active_object.data, "layers", index=1, toggle=True, text="Claw")

        row = col.row()

        row.prop(context.active_object.data, "layers", index=16, toggle=True, text="Root")

With:

        #Layers

        row = col.row()

        row.prop(context.active_object.data.collections["Root"], "is_visible",toggle=True, text="Root")

        row = col.row()

        row.prop(context.active_object.data.collections["Clamp"], "is_visible",toggle=True, text="Clamp")

        row = col.row()

        row.prop(context.active_object.data.collections["Base"], "is_visible",toggle=True, text="Base")

        row = col.row()

        row.prop(context.active_object.data.collections["MCH"], "is_visible",toggle=True, text="MCH")

For this to work, instead of having the bones in layers, the collection names need to match context.active_object.data.collections["Root"]. So the bone collection name needs to be Root in this case (or match in code whatever you are using).