title: Crystal reports: using summary field in formula / summing time field in formula
body: <p>In crystal reports I want to show the <em>sum</em> value of <em>time</em> objects, i.e. An employee worked in one month three days and on each day a variable amount of hours. </p>
  
  <p>Is there anyway to <em>sum</em> a <em>time</em> field? </p>
  
  <p>Or as a workaround I could use the time field as an <em>integer</em>, sum this and display. But then I would like to change the display format by using a formula. I cant find a way to include summary fields in a formula...</p>
  
  <p>Thanks in advance</p>
  
  <p>PS I am using <em>CR 2011</em> (just the program not through <em>VB</em> or anything). </p>