HELLO, I SOLVED MY ISSUE.
If anyone is interested, I'm using custom lists instead of multiple choices and I had to use the item INDEX, not LABEL.
So instead of this:
{
"name": "test.test@test.com",
"email": "test.test@test.com",
"subject": "test",
"message": "test ticket",
"tipol": "60.system XXX",
"commessa": "10.aaaa",
"Macro-Aree": "80.aaaaa",
"priority": "Normal"
}
Use this:
{
"name": "test.test@test.com",
"email": "test.test@test.com",
"subject": "test",
"message": "test ticket",
"tipol": 60,
"commessa": 10,
"Macro-Aree": 80,
"priority": 2
}
THANK YOU ALL!