title: Macro to alert me when a cell changes value -- popup alert - EXCEL
body: <p>I am looking to create a macro to alert me when a cell's value changes. The cells in this particular column can have values of either "OVER" or "UNDER". I would like to write code to alert me via a popup (Message: "Cell A crosses under(over)") when the value changes.</p>
  
  <p>Thanks, </p>
  
  <p>patrick</p>