Realtime data plot example not working based on VisivleXRangeMaximum on second run

[ManojPrabhakar-dev]

In Real time data demo,

1. select "Add Multiple" option. it will plot up to 1000 random data.
2. select "Clear Chart" option. it cleared the Linechartcontroller data.
3. Again select "Add Multiple" option.
   - X Axis visible range not working properly.
   - What is the right way to clear and start adding data again. -> start (listening stream data) and stop (cancel listner) sequence.
   - on clearing Line Chart Controller data, it removes the entire control leaving plain screen. Is there a way to clear only that line data leaving Graph Control and grids on the UI. so, that when start receiving data again, drawing the line on the already existing control.