how does this function work in advanced mode of the Seo pro plugin? (In advanced mode, you can use "|" (ie. {{CITY|REGION|COUNTRY}}) to get first non-empty value from multiple tags and "+" to join multiple tags using delimiter (ie. {{CITY+REGION}}). it is possible to combine these operators (ie. {{CITY|REGION+COUNTRY}}) and mix tags & text.)

although I type these the location words it doesn't show anything.

@mariogtz
{{CITY|REGION|COUNTRY}} --> return City if not empty, otherwise region if not empty, otherwise country
{{CITY|REGION+COUNTRY}} --> return City if not empty, otherwise region concatenated with country (using empty string) if not empty (at least one of them cannot be empty)