The general area of Illinois statutes you may want to research is found at Title 30 of ILCS - CORRECTIONS ( link below).
You may also want to take a look at an e-How web page on Illinois parole violation laws (link also below).
Notwithstanding your own research, you would most certainly be best served by consulting an Illinois lawyer familiar with that state's criminal and parole laws.
"The law" is a very complex profession, and all specific legal questions will depend on a variety of facts that you may not think to include in your questions on this forum. I am not your attorney, and in answering your question you must understand that I cannot and do not give you legal advice upon which you are entitled to rely. At best, I hope that my answer, and others you find here, will give you a basis for better understanding of the issues you face so that you can provide complete information to a lawyer that you retain to give you advice and representation on which you can confidently rely.