Legal fees in a lease (Detroit, MI)

[Alethea Sealy]

I am in the process of  studying Michigan and Detroit law. Presently, when a renter does not pay rent on time a charge for a 7 day notice ($10). Then we also charge them $400 ( that is a charge to file the paperwork, the lawyer and any other legal fees incurred) for the eviction process. I am just checking if this is in line and allowed by Michigan law. Any thoughts on this.