Problem to format phone number

[Gerard]

Hi !
I would like to format a French phone number (10 digits) this way: 01 52 93 44 05 (by adding a space every 2 digits).
As I'm totally new to JavaScript, I usually search informations on the forum to edit or modify existing rules to build mines, a way like another to try to understand the "language" but this time, the operation seems to be too complicated for the beginner I am…

I guess I must formulate "for the field "phone", pick the two first digits, then add a space, take the two followers, add another space and so on till digit number 8

Searching in the forum, I tried something like :
return FormatNumber("##&#32##&#32##&#32##&#32##", Field("Tel"));
but it didn't work…

As I don't want you to do the job instead of me, some informations to help me to find my way would be really appreciated !
Thank you !
Gerard.

[rpaterick]

This should work.

return Str(Field("phone").replace(/(\d{2})(?!$)/g,"$& "));

[Gerard]

Thank you !
It works perfectly, the field filed with or without spaces, exactly what I needed !
Gerard.