Let me explain what is going on here and why I'm not going to spend any more of my time on this thread - or any other where you show the same attitude to requesting free help.
Post #7 (NeoPa)
(translation)
I've tried to decipher what you've posted but it doesn't make sense. This is because you can't be bothered to formulate a question properly or clearly.
Please try again and pay particular attention to various points - including that it's written in proper English so there are no ambiguities.
Post #8 (eyalco)
(clearly ignoring almost everything I say AGAIN)
It's a kindergarten where parents come once a year and pay with 12 checks, 1 for each month. Upon payment, they receive a receipt with their 12 checks listed. Every time when a check is due, we issue an invoice.
Ambiguous. As short as possible to save YOU time and effort (which of course adds both on to my plate - thank you).
It's not even checked before posting. I ask for care and you sign off "thabks". That doesn't say any care at all to me.
Post #9 (NeoPa)
Trying to make sense out of what doesn't naturally make sense.
I offer up my interpretation of your project, knowing it's unlikely to be 100% accurate as post #8 doesn't hold together well.
I offer an answer to one of your questions from the information already posted.
Post #10 (eyalco)
It's the other way around : A receipt is isuued once a year - with 12 utems, each item is a chexk(payment) details.
Note three typos included in a single sentence even now.
This directly contradicts "It's a kindergarten where parents come once a year and pay with 12 checks".
I'm sure you meant this to be different from what you posted - but you couldn't be bothered to make it say what you meant. I've rarely seen such a simple issue so clouded by poor posting in all my time here at TSDN.
Frankly, after being requested (and told by a mod) to post your question more clearly four times, you still cannot be bothered to formulate your question clearly, or even check your post for typos before you post it (or even read it to yourself to check after posting and fix them).
I'm thoroughly shocked that you show such blatant disregard for the time and efforts that are put in by someone trying to offer you free assistance.