XY Charts where each series has a different number of points

[User (Legacy)]

I have a xy line graph with 3 series in it.  There are a different number of 

points in each series.  One has 850, the other two have 846. The graph plots 

the xy line as expected except it only plots 846 points and then stops 

leaving 4 points unplotted. 

I am using the OpenDataEx method to place the data.  I am using the 

following lines of code to place the first series: 

cfxChart.OpenDataEx COD_VALUES, 1, 850 

cfxChart.OpenData Ex COD_XVALUES, 1, 850 

And for the following series: 

cfxChart.OpenDataEx COD_VALUES, 1, 846 

cfxChart.OpenDataEx COD_XVALUES, 1, 846 

Is there someother way I can do this so that I can place all three series 

with a different number of points.