Can't get amount of item to changeNot An Issue

Hi.

If i do like this:

{
"_comment": "Sell Elevator for Scrap x 100",
"sellId": 1177596584,
"sellAmount": 500,
"sellAsBP": false,
"currencyId": -932201673,
"currencyAmount": 5,
"currencyAsBP": false
},

and of course reload plugin, my bandit seller will have 1x elevator for 500, even tho i did put 5 for 500?
I have ALL sellers with custom items, so i think i have a quite good grip of what im doing.
What am i doing wrong?

      {
        "_comment": "Sell Elevator x 1 for Scrap x 500",
        "sellId": 1177596584,
        "sellAmount": 500,
        "sellAsBP": false,
        "currencyId": -932201673,
        "currencyAmount": 1,
        "currencyAsBP": false
      }

The comment doesnt have anything to to with the actuall sale, does it? o.O

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