API Reference > presentation-common > PresentationRules > VariablesGroup VariablesGroup Interface Presentation rules support variables that allow having additional customization of the hierarchy and content based on variables whose values can change during application session. There are special ECExpression symbols that can be used to access variables by their ID, so rule conditions can check for a value and change the behavior. It allows showing / hiding some nodes in the hierarchy, change the grouping, etc. Properties Name Type Description label string Group label to display in the UI. nestedGroups undefined | VariablesGroup[] Nested variable groups. vars Variable[] Grouped variables Defined in presentation/common/src/rules/Variables.ts Line 19 Last Updated: 13 June, 2024