Invalid assignment of property or key 'parameters/walk/blend_amount' with value of type 'float' on a base object of type 'AnimationTree'

Godot Version

Godot 4.5.1

Question

i tried to use AnimationNodeBlendTree to play my animations, but it shows me that i have error at this lines , could any one help me with this?

func update_animation():
	ANIM_TREE["parameters/walk/blend_amount"] = walk_value
	ANIM_TREE["parameters/jump/blend_amount"] = jump_value

Are you sure you are assigning to the correct variables? As in, are the names/paths correct?