“The problem is the Blender API documentation is awful, and this particular function is undocumented (i.e. they confirm that it exists, but do not explain what it does…. ).”
Welcome to Blender, there is a lot of stuff in Blender nobody knows what it does.
New version installed, Loop Tools enabled. It kinda works now, nice.
This ‘Set curve radius’ doesn’t work, it’s a pity.
