Wisconsin

I run on a very tight budget. I cannot afford much more for myself until tax time every year. This life kind of sucks, but its all I got. I recently got put on probation and they feel that I need to pay a total of $60 a visit for probation fees. I cannot afford to pay $60 a visit. I can afford something around $20. Am I going to be in violation of my probation if I cannot afford to pay my probation fees in full each visit? I think that is very unlawful for an agency to do that. I thought probation was supposed to be a better alternative to Jail.