[How to get an array of Invoice items slected by invoice_id?]

Hello!

I need to download the list of products from the invoice with a specific ID, but I don't know which API function I can do that

http://source-docs.blesta.com/class-Invoices.html#_get

[How can i get total amount and anything else from invoice in gateway template?]

Hello, Today I started to adapt my blest to my hosting. I used the payment gateway as POST form in the HTML template. I would like to ask you how I can take data such as amount, order ID.