If you only see one data set, it is most likely that you are missing the x-axis data. If you go look at the example I posted previously, the @data contains 3 array references. The first is the x-axis data, the following two are the actual plot data. So you are missing an arrayref somewhere. Sorry thats all I can see, because your code is not runnable by me, to test.

        @date = "";
        @totals = "";
 .....
........
    @data = (
                [@date],     # this is the x-axis data
                [@totals],   # first plot
                [@totals1]   # this gives the second plot
      );
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