JMaskField mask input : delete and backspace do not work

Question

I am using this package for formatted input.
Delete and backspace do not work if the field is created with a default text as in the code snippet I attach. Did somebody managed this to work? How? delete and backspace work badly in everycase anyway.
best regards
-Mangi
MaskMacros macros = new MaskMacros();
macros.addMacro('*',"[a-zA-Z0-9]");
macros.addMacro('#', "[0-9]");
macros.addMacro('@', "[a-zA-Z]");
macros.addMacro('%',"[A-Z]");
macros.addMacro('*',"[a-zA-Z0-9]");
MaskField2 k = new MaskField2("CODE******",macros);

Answer 1

Nope, I don't think those keys are even "firing" as another person worded it. I can push the buttons down, so they aren't stuck but it doesn't seem to be sending any signal.