Your question is rather complex, and you have several options that you could explore. If your ex-husband is refusing to pay court-ordered expenses, then you may have a case against him in contempt, pursuant to C.R.C.P. 107. Additionally, you could attempt to serve your ex with interrogatories pursuant to C.R.C.P. 69 to learn more about his financial situation. The processes involved in either of the above-mentioned options are nuanced and require a greater level of explanation and detail than I can provide here. You should make an appointment with an experienced attorney to discuss your options regarding enforcing your order and collecting the money that is owed to you.