Inverse vertical axis not working and minimun and maximun not working also

Hi

I'm building a chart but I wont to specify the vertical and horizontal axis minimum and maximum value.

also I want the vertical axis ti be inverse and to cross with the horizontal axis at the bottom (vertical axis maximum value)... but the code I wrote is not doing anything of what I want. this is what I code:

            radChartKatzA.Series.Clear();
            LinearAxis katzA_hor_Axis = radChartKatzA.Axes.Get<LinearAxis>(0);
            LinearAxis katzA_ver_Axis = radChartKatzA.Axes.Get<LinearAxis>(1);
            katzA_hor_Axis.Minimum = 0;
            katzA_hor_Axis.Maximum = 800;
            katzA_hor_Axis.MajorStep = 100;
            katzA_ver_Axis.Minimum = 0;
            katzA_ver_Axis.Maximum = 1400;
            katzA_ver_Axis.MajorStep = 50;

            katzA_hor_Axis.IsInverse = true;

            katzA_hor_Axis.LineWidth = 6;
            katzA_hor_Axis.TickWidth = 8;

            ScatterLineSeries katzLinea1A = new ScatterLineSeries();

            katzLinea1A.DataPoints.Add(0, 700);
            katzLinea1A.DataPoints.Add(350, 700);

           radChartKatzB.Series.Add(katzLinea1A);

thank you for your help

Carlos