My script did not sell! What did i do wrong?

Hello. I am new author in Envato. I create my account in June. Then i made a Codeigniter Script and it is in Codecanyon now. But it does’nt sell yet.

It is big disappointment for me. I did not understand why? Please i need critics and advices from experienced authors about it. Thank You.

Maybe there’s no demand for it right now?