SPLUNK -Create Dependant Drop Down Menus

I am working on dropdowns for a Splunk dashboard. I have continent, country, city in my data. So, the first drop down is [login to view URL] on selected "Continent" it should fill country from selected "country" in 2nd dropdown and depending on country selected it should fill the countries "city" in 3rd dropdown. Two cases one with continent and one without continents so two case menus "two and "three" in number. Need to retrieve the values I have attributed to the Continent, Country and city for first case and country and city for second case I guess via tokens for Splunk queries. Static name-value pairs I guess in for Splunk drop downs. 1-Many relationship. "Name and Value in Splunk" Static Options I think. EUROPE-> (Germany, France, UK) AFRICA->(Ghana, Algeria ,Kenya) AMERICAS->(Brazil,USA,Panama ) ----------------------------- Germany-> Berlin France->Paris UK ->London --------------------------- Ghana ->Accra Algeria -> Algiers Kenya ->Nairobi --------------------------- Brazil ->Brasilia USA ->Washington Panama ->PanamaCity --------------------------- I have started looking at [login to view URL]