NULL point in array?

[pmach]

(TeeChart for C++ Builder 2009 ) I need to draw large moving line graph which have "holes" (isn't continuous). Currently I'm using TLineSeries and functions AddXY and AddNullXY but it's too slow. TFastLineSeries is faster but it can't draw "holes" - AddNullXY just add point with value 0.
I tried to modify directly DynamicArray and add it Series1->XValues->Value =(TChartValues)(array); but I don't know how to insert NULL point to DynamicArray?

[Yeray]

Hi pmach,

I think that's the same that was discussed here

[pmach]

Thank you Yeray. It was helpful.
(BTW I discovered that TFastLine can handle NULL points, I just overlooked properties IgnoreNulls and TreatNulls)