I'm a beginner developer! Please help me add the updating data to the chart, while I do not understand how to do it Here is my code I need the data var amount: Double

import SwiftUI
import SwiftData

@Model
class ConsumableProperty {
    /// Расходные свойства
    var title: String
    var subTitle: String
    var amount: Double
    var date: Date

    // Категория расходов
    var category: Category?

    init(title: String, subTitle: String, amount: Double, date: Date,category: Category? = nil) {
        self.title = title
        self.subTitle = subTitle
        self.amount = amount
        self.date = date
        self.category = category

    }
    // Строка валюты
    @Transient
    var currencyString: String {
        let formatter = NumberFormatter()
        formatter.numberStyle = .currency
        return formatter.string (for: amount) ?? ""
    }
}

I need to add a value var amount: Double instead of values amountSpent: 5540

import SwiftUI
import Charts
import SwiftData

struct CostAnalytics: View {

    let viewMonths: [ViewMonth] = [
        .init(date: Date.from(year: 2023, month: 1, day: 1), amountSpent: 5540),
        .init(date: Date.from(year: 2023, month: 2, day: 1), amountSpent: 6560),
        .init(date: Date.from(year: 2023, month: 3, day: 1), amountSpent: 10),
        .init(date: Date.from(year: 2023, month: 4, day: 1), amountSpent: 850),
        .init(date: Date.from(year: 2023, month: 5, day: 1), amountSpent: 50),
        .init(date: Date.from(year: 2023, month: 6, day: 1), amountSpent: 250),
        .init(date: Date.from(year: 2023, month: 7, day: 1), amountSpent: 350),
        .init(date: Date.from(year: 2023, month: 8, day: 1), amountSpent: 65),
        .init(date: Date.from(year: 2023, month: 9, day: 1), amountSpent: 250),
        .init(date: Date.from(year: 2023, month: 10, day: 1), amountSpent: 350),
        .init(date: Date.from(year: 2023, month: 11, day: 1), amountSpent: 950),
        .init(date: Date.from(year: 2023, month: 12, day: 1), amountSpent: 500)
    ]