wait wait that can be all...
what happend if blockchain falls, this will work? I would have to use a blockchain acount yes or yes? (I really dont mind to move the money. But it will generate a diferent address for each user it log in? )

Thanks for the quick response

EDIT: nice i just read all the blockchain api.  One thing i didnt understand if I can change the amount to be paid in each wallet generated but i think its something easy for them. must be there.

Thanks a lot close this please.

PD: someone said i could install bitcoin core in the server, meaby thats to much for me for the moment.