Problem with different phone number patterns

Hello,

I've got a problem with my display and validation pattern for my phone numbers.

In Holland we have two sorts of phone numbers:
Always 10 numbers, but some regions have a 3 digit area code,
other regions a 4 digit area code.

Example:
012-3456789
0123-456789

This is also the way I want my users to enter the data.

I want to display them as followed:
012-3456789 --> 012 - 345 67 89
0123-456789 --> 0123 - 456 789

My display pattern right now is: text{999 - 999 99 99}|text{9999 - 999 999}
My edit pattern is: text{999-9999999}|text{9999-999999}
My validation pattern is: text{999-9999999}|text{9999-999999}
(With a pop-up message to fill in 10 numbers, area code seperated from the rest by a dash, as in the example)

The problem is that the validation works fine, but it always transforms the phonenumber to the first option (999 - 999 99 99).

How can I fix this?

Greetings and thanks in advance,

Sterre