PowerCom new version will not allow you to display the result if you set hide the result during Poller design. If you like to decide at slide show time to show or not show result, please do not set hide the result during Poller design. During slide show, press next page when polling stop to skip showing the result. You always can go back to the slide and display D to show result.
When you absolutely sure you are not going to show the result, then use hide result.
This is the best way to prevent accidently show result.