There are many things that can go wrong with taglibs. From your tag, it seems OK.
However your beans might not be correct. What sort of error or problem do you have?
Also it is important to name your beans according to the Javabean Specification. It might not be the problem, but is the property mfrnames associated with bean getter and setters called getMfrnames() and setMfrnames()?
Normally you would use getMfrNames(), with the first letter of each real
word capitalized.
HTH
I have seen things you people would not believe, attack ships on fire off the shoulder of Orion, c-beams sparkling in the dark near the Tennhauser Gate. All these moments will be lost in time, like tears in the rain.