title: How to modify the variable in SSIS?
body: <p>I have a simple String variable with the following value: "C:\Test.txt".
  Now I would like to edit the variable to point to a different file.
  I cannot find a way to do that. I can change the Name, Data Type, but not the value itself!
  Do I need to delete the variable and create the new one?</p>
  
  <p><strong>Update:</strong> The problem was caused by "ReadOnly" property set to "True". For typical scenarios, see the accepted answer below.</p>