Is using Java Reflection Bad Practice?

I am building an application for a client and I am in the situation where I need to have the ability to reference a field value via a string, i.e the users uses a string to define which field they want to change the value of, this is part of an abstract framework so technically I don't know the name of the fields they desire to change. Of course I could do this using hash maps, but I am considering using java reflection as this allows the fields to stay as fields of the object rather than the values being coded into a hash map. I have used reflection for my own personal work, but I was wondering if using Java reflection is actually bad practice, and I should stick to the hashmap methodology.

(Any other suggestions for solving the design problem described are also appreciated)

Thanks