How can I set a variable number of digits without hyphens?

Hi, I created a form to register new member, the "username" is as per member's mobile number. I set the "username" as Unique Question to prevent multiple sign up with the same mobile number. 

My question is: 

if one register 0123456789, another use the same number but add hyphen: 012-3456789, there are two accounts created by jotform setting, but actually it is a same number. CAN I SET NUMERIC VALIDATION ONLY WITH HYPHEN EXCLUDED. 

I try to put masking ##########(10 digits) to avoid hyphen, but the problem is there are different digits of mobile phone in my country, I can't limit the digits. 

May I know any solution on it?

Hi, thank you for contacting us.

Please note that it is not possible, using masks, to account for different combinations of digits. The only way I can suggest to work around this is to opt for the form source and introduce this functionality manually.

If you have more questions or need further assistance, please let us know. Thank you.