Creating a Map in qlik sense for Continents

[konidena]

Hi Team,

I am working in the map object in qlik sense. I have the requirement as below.

I have a four Regions. I need to show these 4 regions as my first level in the drildown. Then countries as a second level  and cities as a third level. 

I am tried coding the Region level first but I am not able to get it as a map dimension in after reloading.

Regions list:

APAC

EUROPE

Central America

North America

When i am loading the Region Field in the Load Script, how to code this field to get it as a map object dimension. 

So, If i select Area Layer in the Map object in Jun 2019 version, I should see these 4 regions highlighted with default color.

Please help me in achieving this functionality.

Regards

Srinivas