How can i make multi sequence based on another field
for example i have field named prefix and field named sequence
the user can write any thing in prefix field
for example if the user write xx in prefix , then the sequence will be xx0001
if he enter xx again then the sequence will be xx0002 , if he enter ff then the sequence will be ff0001......
the user can write any thing in prefix field , this field isn't selection it is Char field
any idea to make this?