1)the TickmarkInterval didnt work and i dont know. i constate that it work when the legend is rigth or left.

2) and when all my data value are null, i am getting on X Axis just 0 and 1 but i want to maintain the interval and rangemax to 100.

<igchart:UltraChart BackColor="White" BackgroundImageFileName="" BorderColor="Black"
    BorderWidth="0px" ChartType="StackBarChart" EmptyChartText="Data Not Available."
    Version="9.1">
    <Legend Visible="True" Location="Bottom"></Legend>
    <ColorModel AlphaLevel="150" ColorBegin="Pink" ColorEnd="DarkRed" ModelStyle="CustomLinear">
    </ColorModel>
    <Axis>
        <X LineThickness="1" TickmarkInterval="20" TickmarkStyle="Smart" Visible="True">
            <MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot"
                Thickness="1" Visible="True" />
            <MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot"
                Thickness="1" Visible="False" />
            <Labels Font="Verdana, 7.8pt" FontColor="Black" HorizontalAlign="Far"
                ItemFormatString="&lt;DATA_VALUE:n0&gt;" Orientation="VerticalLeftFacing"
                VerticalAlign="Center">
                <SeriesLabels Font="Verdana, 7.8pt" FontColor="Black" FormatString=""
                    HorizontalAlign="Far" Orientation="Horizontal" VerticalAlign="Center">
                    <Layout Behavior="None">
                    </Layout>
                </SeriesLabels>
                <Layout Behavior="None">
                </Layout>
            </Labels>
        </X>
        <Y LineEndCapStyle="NoAnchor" LineDrawStyle="Solid" Visible="True" RangeMin="0" LineColor="Black" RangeType="Automatic" TickmarkInterval="50" LineThickness="1" Extent="150" LogBase="10" RangeMax="0" TickmarkStyle="Smart" TickmarkPercentage="10" NumericAxisType="Linear">
            <StripLines Interval="2" Visible="False">
                <PE FillGradientStyle="None" FillOpacity="255" FillStopOpacity="255" ElementType="SolidFill" Fill="Transparent" Hatch="None" Texture="LightGrain" ImageFitStyle="StretchedFit" FillStopColor="Transparent" StrokeOpacity="255" ImagePath="" Stroke="Black" StrokeWidth="1" ImageWrapMode="Tile" TextureApplication="Normal"></PE>
            </StripLines>
            <ScrollScale Scale="1" Scroll="0" Height="10" Width="15" Visible="False"></ScrollScale>
            <Labels ItemFormatString="&lt;ITEM_LABEL&gt;" VerticalAlign="Center" WrapText="False" FontSizeBestFit="False" SeriesFormatString="&lt;SERIES_LABEL&gt;" ClipText="True" Font="Verdana, 7pt" Flip="False" ItemFormat="ItemLabel" FontColor="Black" Orientation="Horizontal" Visible="True" OrientationAngle="0" HorizontalAlign="Far">
                <SeriesLabels Font="Verdana, 7pt" Visible="True" HorizontalAlign="Center" FontSizeBestFit="False" ClipText="True" FormatString="&lt;SERIES_LABEL&gt;" Orientation="VerticalLeftFacing" WrapText="False" Flip="False" FontColor="Black" VerticalAlign="Near" OrientationAngle="0"></SeriesLabels>
                <Layout Behavior="Auto">
                </Layout>
            </Labels>
            <MajorGridLines AlphaLevel="255" DrawStyle="Dot" Color="Gainsboro" Visible="True" Thickness="1"></MajorGridLines>
            <MinorGridLines AlphaLevel="255" DrawStyle="Dot" Color="LightGray" Visible="False" Thickness="1"></MinorGridLines>
            <TimeAxisStyle TimeAxisStyle="Continuous"></TimeAxisStyle>
            <Margin>
                <Far MarginType="Percentage" Value="0"></Far>
                <Near MarginType="Percentage" Value="0"></Near>
            </Margin>
        </Y>
        <Y2 LineThickness="1" TickmarkInterval="0" TickmarkStyle="Smart" Visible="False">
            <MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot" Thickness="1"
                Visible="True" />
            <MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot" Thickness="1"
                Visible="False" />
            <Labels Font="Verdana, 7pt" FontColor="Gray" HorizontalAlign="Near" ItemFormatString="&lt;ITEM_LABEL&gt;"
                Orientation="Horizontal" VerticalAlign="Center" Visible="False">
                <SeriesLabels Font="Verdana, 7pt" FontColor="Gray" HorizontalAlign="Near" Orientation="Horizontal"
                    VerticalAlign="Center">
                    <Layout Behavior="Auto">
                    </Layout>
                </SeriesLabels>
                <Layout Behavior="Auto">
                </Layout>
            </Labels>
        </Y2>
        <X2 LineThickness="1" TickmarkInterval="200" TickmarkStyle="Smart" Visible="False">
            <MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot" Thickness="1"
                Visible="True" />
            <MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot" Thickness="1"
                Visible="False" />
            <Labels Font="Verdana, 7pt" FontColor="Gray" HorizontalAlign="Far" ItemFormatString="&lt;DATA_VALUE:00.##&gt;"
                Orientation="VerticalLeftFacing" VerticalAlign="Center" Visible="False">
                <SeriesLabels Font="Verdana, 7pt" FontColor="Gray" FormatString="" HorizontalAlign="Far"
                    Orientation="VerticalLeftFacing" VerticalAlign="Center">
                    <Layout Behavior="Auto">
                    </Layout>
                </SeriesLabels>
                <Layout Behavior="Auto">
                </Layout>
            </Labels>
        </X2>
        <Z LineThickness="1" TickmarkInterval="0" TickmarkStyle="Smart" Visible="False">
            <MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot" Thickness="1"
                Visible="True" />
            <MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot" Thickness="1"
                Visible="False" />
            <Labels Font="Verdana, 7.8pt" FontColor="Black" HorizontalAlign="Near" ItemFormatString=""
                Orientation="Horizontal" VerticalAlign="Center" Visible="False">
                <SeriesLabels Font="Verdana, 7.8pt" FontColor="Black" HorizontalAlign="Near" Orientation="Horizontal"
                    VerticalAlign="Center">
                    <Layout Behavior="Auto">
                    </Layout>
                </SeriesLabels>
                <Layout Behavior="Auto">
                </Layout>
            </Labels>
        </Z>
        <Z2 LineThickness="1" TickmarkInterval="0" TickmarkStyle="Smart" Visible="False">
            <MajorGridLines AlphaLevel="255" Color="Gainsboro" DrawStyle="Dot" Thickness="1"
                Visible="True" />
            <MinorGridLines AlphaLevel="255" Color="LightGray" DrawStyle="Dot" Thickness="1"
                Visible="False" />
            <Labels Font="Verdana, 7.8pt" FontColor="Black" HorizontalAlign="Near" ItemFormatString=""
                Orientation="Horizontal" VerticalAlign="Center" Visible="False">
                <SeriesLabels Font="Verdana, 7.8pt" FontColor="Black" HorizontalAlign="Near" Orientation="Horizontal"
                    VerticalAlign="Center">
                    <Layout Behavior="Auto">
                    </Layout>
                </SeriesLabels>
                <Layout Behavior="Auto">
                </Layout>
            </Labels>
        </Z2>
    </Axis>
    <TitleBottom Visible="False">
    </TitleBottom>
    <Tooltips BorderThickness="1" Overflow="None" FormatString="&lt;DATA_VALUE:00.##&gt;" EnableFadingEffect="False" FontColor="Black" BorderColor="Black" Display="MouseMove" BackColor="AntiqueWhite" Padding="0"></Tooltips>
</igchart:UltraChart>

thanks