Change the format Display

[NoxinDVictus]

It there a way to change the format form +855 XXX XXX XX to +855 XX XXX XXX.

Am I going to use the defaultMask ? If so can someone show me how to use it ? It would mean a lot or is there another way of doing this ??

Thanks

[NoxinDVictus]

masks={{kh: '.. ... ... ...'}}