why is my filter not working?

[vagrant geyser]

function removeItemFromDynamicProperty(player, number) {
    world.sendMessage(number)
    const dy = player.getDynamicProperty('backpack');
    if (!dy) {
        world.sendMessage("Backpack is empty or not defined.");
        return;
    }
    const backpack = JSON.parse(dy);
    const { slots, items, amounts, randoms } = backpack;
    world.sendMessage(`Before: ${slots} /// ${items} /// ${amounts} /// ${randoms}`);
    const index = slots.indexOf(number);
    if (index === -1) {
        world.sendMessage(`Item with number ${number} not found in backpack.`);
        return;
    }
    slots.splice(index, 1);
    items.splice(index, 1);
    amounts.splice(index, 1);
    randoms.splice(index, 1);
    const updatedBackpack = { slots, items, amounts, randoms };
    world.sendMessage(`After: ${slots} /// ${items} /// ${amounts} /// ${randoms}`);
    player.setDynamicProperty('backpack', JSON.stringify(updatedBackpack));
}

[2024-05-28 20:02:07:988 ERROR] [Scripting] TypeError: cannot read property 'indexOf' of undefined

[leaden lark]

What is slots

I see it’s meant to be an array, but is it being defined correctly?

[vagrant geyser]

yes

[leaden lark]

You’re passing it into the function as a string

[vagrant geyser]

yes

[leaden lark]

The stringify is then taking that as a string

And it is being read as a string

Ah, also; you’re saving the data as an array of objects

But you’re reading the data as just an object

[vagrant geyser]

how

[leaden lark]

Here it’s being saved as an array of objects

[leaden lark]

And here you’re destructuring it, but it’s being saved as an array, so all the variables in the destructuring are undefined

[vagrant geyser]

how can I define them suddenly?

[leaden lark]

Don’t save it as an array in here

Unless you want it as an array

[leaden lark]

In that case read it as an array here

[vagrant geyser]

I could have an example I really don't understand what you mean

[leaden lark]

Console warn your saved data

[vagrant geyser]

yes

[leaden lark]

So an array of objects

[leaden lark]

Yet in here, you are reading the data like it is not an array, and just a single object

[vagrant geyser]

yes

[leaden lark]

That does not work

[vagrant geyser]

I still have this error

[leaden lark]

Because you are attempting to destructure an array of objects as though it is just an object

[leaden lark]

That would be this problem

[vagrant geyser]

?

[leaden lark]

Wdym

[vagrant geyser]

how can I remove all the line now?

[leaden lark]

Remove what line

[vagrant geyser]

a line which includes the number that I choose is the number that and in the line I want to recover and supp all the line c possible? if yes how can I do it

[leaden lark]

I do not understand

[vagrant geyser]

I want to delete a specific line in my dynamicprop