get corrective morph assignement to a joint via script?

Genesis 3 Female has corrective morphs assigned to the joints via add multiply or spline (e.g. pJCMPelvisFwd_25)

In the file pJCMPelvisFwd_25.dsf theer are parameters like type, label, min/max, but also the values in "formulas" available.

	"formulas" : [
		{
			"output" : "Genesis3Female:#pJCMPelvisFwd_25?value",
			"operations" : [
				{ "op" : "push", "url" : "pelvis:/data/DAZ%203D/Genesis%203/Female/Genesis3Female.dsf#pelvis?rotation/x" },
				{ "op" : "push", "val" : -0.04 },
				{ "op" : "mult" }
			]
		}
	],

Is there a method to get all these values from the bone via script and how? Any idea or hint into the right direction and where to look?

Thanks and best regards

Walter