We need to identify metrics that we can use to evaluate if Combobox has an impact on template variable functionality.

This is the structure:

grafana_dashboards_template_variable_changed

• renderWithCombobox: boolean (feature toggle)
• isAllOption: boolean (true if the user changed it to the specific all value)
• isCustomOption: boolean (true if the user added a custom value)
• isMulti: boolean (true if the component is a multiselect)