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The Multi-dimensional Dropdown Slicer allows you to filter your chart by data attributes displayed in the dropdown. It is most useful when you want the user to be able to filter the dashboard with multiple categories or when you want to save space for charts and tables.
Use the ellipsis menu next to the data binding menu to choose the binding mode. Each mode displays specific binding slots:
Multi-Dimensions (default)
Dimensions – Bind the fields you want to use as filtering dimensions. Each selected field becomes a separate filtering category in the slicer.
Parent-Child
ParentId – Bind the field containing the parent node identifier for each item.
Id – Bind the field containing the unique identifier for each item.
Display – Bind the field containing the label or name to display for each item in the slicer.
Hierarchy
Hierarchy – Bind the field containing the hierarchical structure used for navigation and filtering.
Display – Bind the field containing the label or name to display for each level in the hierarchy.
You can customize the appearance and behavior of the Multi-dimensional Dropdown Slicer using the Inspector Panel. Make sure the slicer is selected to see the available styling options.

In the Slicer Style section, you can adjust the look of the dropdown menu:
Inner Border Color and Inner Border Size control the border inside the dropdown.
Content Font Settings let you set the font family, size, color, weight, and style for the slicer's text.