I have a R.U.B.E. loaded body containing two fixtures. One is named square, the other is named circle. How can I remove the square fixture with code? I'm trying to create a block that turns into a wheel when clicked on and starts rolling. I am getting the body using game.physics.box2d.getBodiesAtPoint(x, y), but can't figure out how to target the fixture and remove it. bodiesUnderMouse.removeFixture('square') or bodiesUnderMouse.removeFixture(0) results in TypeError: a.GetBody is not a function. Changing it to dynamic using bodiesUnderMouse.static = false works fine, so the body is found.