I have i lite serial number:
1231728631652436125346152364124512653421543521374527145
I want to put a - after each caracter..
BUT I dont want that:
12345-12345-12-----
So the function must calculate the LEN an calculate how many - he must put...
so ex:
12345-12345-12345-12345-12345-23
12353-31235-1325

understand ??
I hope ;0)