C.R.S. § 15-2.5-406
15-2.5-406. Power to contract - power of appointment not presently exercisable
15-2.5-406. Power to contract - power of appointment not presently exercisable. (1) A powerholder of a power of appointment that is not presently exercisable may contract to exercise or not to exercise the power only if the powerholder:
(a) Is also the donor of the power; and
(b) Has reserved the power in the instrument creating the power.