[Solved] Error Cannot implicitly convert type bool to int in C#

Dear Sir,

I have an error like this "Cannot implicitly convert type 'bool' to 'int' in C#", please guide me

namespace WindowsFormsApplication6
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        [DllImport("dwmapi.dll", CharSet = CharSet.None, ExactSpelling = false)]
        private static extern int DwmSetWindowAttribute(IntPtr hwnd, int attr, ref int attrValue, int attrSize);

        private static bool IsWindows10OrGreater(int build = -1)
        {
            return true;
        }

        private static bool UseImmersiveDarkMode(IntPtr handle, bool enabled)
        {
            try
            {
                if (Form1.IsWindows10OrGreater(17763))
                {
                    int num = 19;
                    if (Form1.IsWindows10OrGreater(18985))
                    {
                        num = 20;
                    }
                    int num1 = enabled;
                    bool flag = Form1.DwmSetWindowAttribute(handle, num, ref num1, 4) == 0;
                    return flag;
                }
            }
            catch (Exception exception)
            {
            }
            return false;
        }
    }
}