Process.Start not working within if statement

Hi guys I have an if statement that doesn't seem to work when i put a point break and went through step by step the code works but if I just run it only the first process.start is run

if (Copy1 != "")
     {
      Process.Start(Copy1);
      }
      if (Copy2 != "")
      {
      Process.Start(Copy2);
      }
      if (Copy3 != "")
      {
       Process.Start(Copy3);
      }