How to create a growing hitbox

Godot Version

4.3

Question

` I’m trying to create a hitbox that grows frame by frame alongside a Sprite2D

The hitbox is a circle
in _ready() an initial radius value is set
an incrementing value variable is set
in _process the value is incremented by $CollisionShape2D.shape.radius += increment_value

Despite this, the hitbox doesn’t appear to change ingame and remains at its initial value`