Is it permissible to change the intention from one voluntary prayer to another?

Question:
May Allah reward you, Your Eminence, father. The questioner asks: Is it permissible to change the intention from one voluntary prayer to another voluntary prayer?

Answer:
Yes, it is permissible to change an obligatory prayer to a voluntary one, and to change a voluntary prayer to another voluntary one, but the reverse is not permissible: changing a voluntary prayer to an obligatory one; because the obligatory prayer is higher than the voluntary one. Yes.