title: Excel data change, Java does not notice
body: <p>I have a stupid problem.
  I'm automating some tests with selenium, some data is in excel sheets (It was like that, I'll change it, I promise :p)
  Some of the fields are dropdowns, I can change them and everything is OK. Others are regular text, if I change them my ExcelReader class just dont notice it and pick the old value.
  I'm no excel expert (I dont have much idea about it) but anyone can guess a possible cause for this?</p>
  
  <p>Note: I'm not checking for changes in real time. I'm doing different executions and observing data no to change</p>