Changing of patient's I'd to auto increment in openemr

Hi, I need assistance on files I need to affect while changing patient’s external ID to auto increment, in openemr 5.0.2 please

@Peter_Sang

If you are pointing the external id which is in patient demographics page then check the below file for auto incrementing.

library/patient.inc.

Let us know for further clarifications.

Thanks,
ViSolve