Hello Archie, I have started a new project with 3.99x that incorporates a BasicTrendChart. What I found is the Y axis does not seem to auto scale once the maximum number of points is reached. For instance everything works fine and the Y scale auto adjust based on the value but once the chart reaches the maximum number points allowed the Y axis does not seem to change even though the values change. I attached a pic to show where the chart values went greater than the Y axis scale and came back down. My "fix" was to remove the BTC and use a standard windows chart and this problem went away. Thanks