parabolic pde solver returning the value but didn't print the plot of U with time.....

I am using MATLAB 2012a ,I have all the parameter values 'parabolic' pde solver needs i.e. U1=parabolic(u0,0:100,b,p,e,t,c,a,f,d); . I am getting the value of U1 for time 0 but I need the plot of U1 at time 100. For plot I am using the command H =pdeplot(p,e,t,'xydata',U1,'zdata',U1,'mesh','off'); . So how can i get the U1 graph at a time t......... Thanks in advance any help is appreciated.