If you don't know how and where to use that snippet, how did you come up with your original program? Maybe it's now time to learn to program, and also time to learn about LDAP?

The code snippet I quoted is very, very similar to a part of the program you already posted. I recommend you learn to recognize similarities, and also recognize differences, and learn to modify code according to similarity and difference.

thanks anyway, i already figure out the problem and now my script is running fine.

i managed to modify the attribute now on LDAP directory

Thanks for your supportive words