I just don't know what to do with this. Can someone help?

Code:
 
using Microsoft.Win32.SafeHandles;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Data;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace Test1
{
    public partial class UserControl1 : UserControl
    {
        
        private int unitOfMeasure = 0;
        public int UnitOfMeasure
        {
            get { return unitOfMeasure; }
            set { unitOfMeasure = value; }
        }
        public int MeterTypeSelected = 0;


        public string[,] UOMText = new string[48, 48];

        public string TempMeterTitle = "TempTitle";


        public UserControl1()
        {
            InitializeComponent();
            //ToDo: Fill UOMText Array
        }
        
        private void timer1_Tick(object sender, EventArgs e)
        {
            lblUOM.Text = UOMText(MeterTypeSelected, UnitOfMeasure);
            lblMeterTitle.Text = TempMeterTitle.ToString();
        }
    }
}
The problem is with the line (Under the timer1_tick near the end of the page):
lblUOM.Text = UOMText(MeterTypeSelected, UnitOfMeasure);

The error is: "The name 'UOMText' does not exsist in the current context."

What I find puzzling is the next line does not have the issue. Hmm...

What do I need to do to fix this?

Thanks