Contempt is a quasi-criminal issue and involves higher standards of proof. You need to show that there is a valid order, that your opponent knows about the order and has the ability to comply. That last one can take work to prove if your opponent is careful and crafty. In my experience, the courts tend to want to see problems resolved rather than raised as issues to fight as contempt.
The good thing is that you already have a judgment and order. Perhaps you could ask the court to impose statutory interest on the debt (which you are rightly owed at 10% annual rate on any debt over 30 days past due). That would make the court aware of the problem and help if you had to go further for contempt. While you are at it, you could ask for costs in having to bring the action (but you have to show that opponent can pay).
If it is a small claims sized debt, that would probably be the cheaper way to go. The higher the standard of proof, the more time and money you pay to make your case.
Take my opinion for what it is worth. I am not an attorney (But I have been in court over 50 times [mostly family law], representing myself most of that time and have conducted a three day trial).