Line series - Display without interpolation

[Bhuvana]

Hi,
I want to draw two lines with different intervals.
One line has 5 mins data interval and another has 10 min data
interval.
Like
Time            Series 1    Series 2
10.00 AM     10             20
10.05 AM      20
10.10 AM      20             25
10.15 AM      Data Missing
10.20 AM      20              35
10.25 AM      10
10.05 AM      20            Data Missing

I want to display both the line series in a single chart.
I am able to see two lines if I set interpolateValues to true.
But i want to show gaps in data when I "Data Missing" in the series.
So I set interpolateValues= false. Now I get only points and no series
of line.

What should we use to show series of line, and which has breaks if
data is missing?

Please help

Regards,
Bhuvana

[Bhuvana]