Get OR Set Accessor

[nk pepcee]

namespace Timed_Maths_Quiz
{
    public partial class Form1 : Form
    {
        Random randomizer=new Random();
        int addend1;
        int addend2;
        public void StartQuiz
        {
          addend1 = randomizer.Next(51);
          addend2 = randomizer.Next(51);

           plusLeftLabel.Text = addend1.ToString();
           plusRightLabel.Text = addend2.ToString();
           sum.Value = 0;
        }

When I Debug or start the code the IDE generates an error at (addend1 = randomizer.Next (51);).tells me (A get or set accessor expected).

please help
Thanks