Invoice system with product selection
I am making an invoice system for myself but I am stuck at one part.
The system is made out of 3 layouts
What I want to do is make an new invoice, select a client from a pulldown menu (one of the clients I made in my contacts part). This is working.
In my invoice description I would like to have is a pulldown menus where I can select a product. And whe I need more products on my invoice that I can add an invoice line. Hope this makes sence ...
What I have right now is a portal with my productcode pulldown menu. This is working, I see my products, but I can not add an extra line ... I've tried several things ...
Can anybody help me?
You can download the file I am working on here
Thanks in advance