VBA chart limits

Hi,
Hope someone can help me.
I have upper and lower limits on a scatter chart. and VBA code that determines if the chart is a pass or a fail. VBA code is referencing the limits at 5 different points on the chart. for the chart to pass all points must be between the upper and lower limit. However it only seems to be reading the first point and determining if that is a pass or fail for the whole chart.

Sorry I couldn't attach the sheet as the file size was too big but here is a jpeg of the chart and the code that relates to it. also attached is the reference sheet for the x and y plot for the graph.
red graph.png

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Any help would be much appreciated. Thanks in Advance

Steve