Using Advanced mode you can create paintbars that plot a line or a cloud on the chart (a "cloud" meaning two lines with a possible fill between them).
To create a Line paintbar, use the SetYValue function with a single parameter. This will result in a line plotted on the chart between the shapes that are placed at the prices specified in the SetYValue function.
NOTE: if you set the value in this function to YSkipValue then the drawing of the line/curve will stop at that point and only resume when another SetYValue is called with a value that is not YSkipValue.
To create a Cloud paintbar, use the SetYValue function with two parameters. The two parameters specify the two lines that define a cloud - that is, two lines on the chart with a possible color fill between them.
NOTE: there are three colors that need to be specified for the cloud - two of them for the lines and one (possibly) for the fill between the lines. To do that, call the SetColor function with a numeric first parameter:
SetColor(0, SomeColor); // this will set the color for the first line
SetColor(1, SomeColor); // this will set the color for the second line
SetColor(2, SomeColor); // this will set the color for the cloud fill - between the lines
The translucency of the cloud fill is defaulted to 50% but can be changed in the Paintbar Parameter editor once the paintbar is placed.