Text Field 9999999"-"99

[KE]

i have a text field with 10 characters that i need to add the symbol "-" between. ex. (9999999-99)

i want to have always the "-" stable and complete only the the other 9 characters.

what i have to do?

[Vipin_Bhargava]

You can set the below display pattern & edit pattern of textfield

text{9999999-99}

~Vipin

[KE]

I have make the changes that you told me but nothing.

Did i make something wrong?