problem with 4 character country code

Hello! My problem is that I want to change the country code "Jamaica" from "+1" to "+1876", but when choosing a country code with a length of 4, the formatting fails, the last 4 digit of the country code goes to the edittext, and the formatting does not work right. Not to mention that the method "getfullnumberwithplus" country code remains "+1" and not "+1876" . I ask for help, preferably an ambulance). Thanks in advance.