How make search service plugin Case Insensitive?

hi …

i m using smack as client for openfire. i used search plugin for find users and now i found that search plugin is case sensitive, which means when i type “Test”

openfire Only retrieve users those contain “Test” word. so i want receive results with “test” , “TEST” , “TeSt” , …

can i configure search service as case insensitive ? and if answer is yes how can i do that?