title: I need a button to clear cells in a google spreadsheet
body: <p>Im making a tool for myself with Google Spreadsheets, and as part of that tool I would like to have a button that clears a specific set of cells.  As I understand it, I need to insert a drawing, and then assign a script to that drawing.  Trouble is, I dont know the first thing about writing my own so, im here looking for help!</p>
  
  <p>The end goal of this would be for me to have a drawing with a script attached to it that would, when activated, clear the data (make them blank, but leave the color) from cells B7-G7.  </p>
  
  <p>Any help you guys could offer would be fantastic!</p>