Sending an array that has to be custom mapped into qs

Hello, there!

I’m making an App and I have an issue trying to format and send a colletion of arrays into the URL of my module.

This is the mappable parameter I’m working with:

{
        "name": "fieldsUpdates",
        "type": "array",
        "spec": [
			{
				"name": "fieldId",
				"type": "text",
				"label": "Field ID",
                "help": "The field ID can be found at /crm/configs/fields/ in your Bitrix24 environment."
			},
			{
				"name": "fieldValue",
				"type": "text",
				"label": "New value"
			}
		],
        "label": "Fields update",
            "help": "Change the value of the field.",
        "required": false
}

The fieldId is dynamic and depends on the user input.

In my Communication tab, I’ve the following setup:

{
    "url": "/crm.item.update.json?entityTypeId={{parameters.entityTypeId}}&id={{parameters.cardId}}&{{parameters.fieldsUpdates.map((field) => `&fields[${field[0]}]=${field[1]}`).join('')}}",
    "method": "POST"
}

I need the values of fieldId to be mapped as fields[fieldId] before using them in the URL.

I have tried to use JS, as in this example:

const fieldItem1 = ["UF_CRM_1243", "https://google.com"];
const fieldItem2 = ["UF_CRM_4321", "pão com ovo"];

const array = [[...fieldItem1], [...fieldItem2]];

console.log(1, array);

const url = "/crm.item.update.json?entityTypeId={{parameters.entityTypeId}}&id={{parameters.cardId}}";

const parameters = array.map((field) => {return `fields[${field[0]}]=${field[1]}`});

console.log(2, parameters);

const newUrl = url+"&"+parameters.join("&");

console.log(3, newUrl);

But the App said that parameters.fieldsUpdates.map isn’t found. So I figured that JS isn’t supported, so I backed to the docummentation but I couldn’t make anything work for me.

Any help?