HELP! TextField "NUMERIC" dont let me enter more than 9 digits

Hi there,
Firstly: I 've search for this question, and I ve found an old post very similar to it.
(here is it: [http://forums.sun.com/thread.jspa?messageID=10706126] )
But, unfortunately, the aswerings did not satisfy me...
The problem is:
I have a TextField that should receive a Credit Card number, meaning, it has to have 15 or 16 numbers.
If I set it as "NUMERIC", when I run the app on my real cellphone (a SonyEricsson w810i), it dont let me enter more than 9 digits. Stringe thing here is: but on emulator, I could...
txtCardNo = new TextField("Card Number", null, 16, TextField.NUMERIC);Instead, if I set it as "ANY", user can type up to 16 numbers, but the problem is that field will accept ANY character, and I dont want that way: I want that this field input acts accepting only numbers.
How could I fix it?
Shall I use a function to mask this field? If yes, how?
Or this could be a problem of JVM implementation on this particular cell phone?
Please, send me any examples and/or links.
Thanks very much.
=Marcello=
PS1: I am quite newbie on Java things...
PS2: I am working on this using NetBeans 6.5.1 and Sun Java(TM) Wireless Toolkit 2.5.2 for CLDC

Yuo can set an ItemStateListener to the Form containing the TextField, and validate the user input in itemStateChanged(...). In case of invalid input, I would show an Alert with an appropriate message, and blank out the content of the TextField (or set it to a default value, as appropriate).
db

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