pspice select analog or digital output display

I have configured a 555 timer in astable mode. I am using pspice, it looks like when I run a time-transient simulation I get the timer output in some sort of digital display. I realize the output will be digital in nature, but I want to see a voltage scale on the y axis, all I get is a 1 or 0 depending where I put the marker. It looks like pspice has determined that this is a digital output and automatically displays it differently. As a test I put a voltage probe on the 10 v supply and I got a second window that showed the typical analog display that I would expect. How can I show the timer output in "analog display" mode? I want to see the actual min and max of the signal. Thanks