@ramakrishnan 

thanks, I can't open what you sent, I only have maple 5, old version and somehow I cannot open the file you sent, is it possible to send it again as a text ? please

@Rouben Rostamian  

I am sure you are saying this because you are not in my situation, but anyhow, I asked people that want to help to help me, I didn't ask for opinions or for telling me bad