proc gplot


I hope one of you can help me with this problem:
I have to create 2 gplots, but they should be beside and not one under the other one, if possible.
One is for Treatment and the second one is for Placebo.
I have tested it with the plot2 statement, but it doesn't work.
That's my statement:
proc gplot data=treata;
plot change*patient / caxis=red
haxis=axis1 hminor=0
vaxis=axis2 vminor=1 nolegend annotate = anno1;
the anno1 data set contains only one label.
At the moment I'm calling this proc gplot twice, one time with treata and then with treatb.

Thanks a lot,