You can dynamically control the chart appearance by creating a rule or several rules for each plot and specifying the background color, line color, line style, line width, and other elements of the chart visual presentation at rendering.

A rule consists of a condition - an expression that specifies how to apply a target property, and a target property - a chart element that you can change.

Add a rule

1. Select a Chart plot.
2. In the Properties window, go to the Rules property and click (Collection).
3. In the RuleDesigner Collection Editor that opens, click Add to add a new rule.
   
4. In the Condition field, specify a condition expression for a target property.
5. In the RuleProperties field, click (Collection).    
6. In the RulePropertyDesigner that opens, click Add to add a target property.
   
      
7. In the TargetProperty field, select a property from the pre-defined list of properties - e.g. LineColor.
   
8. In the Value field, select a value of the target property.
9. Click OK.