Flex Grow on .NETMAUI

Im trying to add a Grow 1 on my .NET MAUI .cs file, can someone please steer me in the right direction, here is the code for the whole file..

Any help would be greatly appreciated! Thanks in advance

using Microsoft.Maui.Layouts;
using Microsoft.Maui.Controls;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace PagesDemo
{
    public class FlexDemo : ContentPage
    {
        public FlexDemo()
        {
            Content = new FlexLayout
            {
                Direction = FlexDirection.Column,

                Children = {
                    new Label
                    {
                        Text = "HEADER",
                        FontSize = 18,
                        BackgroundColor = Colors.Aqua,
                        HorizontalTextAlignment = TextAlignment.Center,
                    },

                    new FlexLayout
                    {
 // I need a grow here
                    }
                }
            };

        
        }
    }
}

In FlexLayout extensions / Grow is this code snippet:

new Label().Grow(1f);

In your code:

• above Content = ..., make a local variable holding what you want to grow.
• Then add that variable to children.
• Finally set Grow afterwards:

var layout2 = new FlexLayout
{
    // contents
};

Content = new FlexLayout
{
    ...

    Children = {
        ...,
        layout2
};

layout2.Grow(1f);

NOTE: It might be possible to move layout2.Grow.. line before Content = .... I haven't tried it.