Hello, I have seen how I can create additional fields, but I have a small detail that I would like you to help me. I want to add an additional field so that people who subscribe can enter their personal identification number of my country. For example, the ID number or person identification number of a person is 401-2278648-7, as the first set of numbers consists of three variables, the second set of numbers consists of seven variables, and finally, the third number game is composed of a single number, but between the first number game and the second there is a script, likewise, between the second and the third number game there is another script. The question is this: How can I create a field in my jomsocial site where this format is, two hyphens by default, and in the first field I can not enter more than three numbers, in the second field I can not enter more than seven numbers and in the third capo can not enter more than one?