'Looping through a map in helm

I am new to yaml and helm templating and have a question in it.

I have the following in my values.yaml file

regionInfo:
   usa:
      DrRegions: uk
      region: usa                
      region_key: usa
   uk:
     DrRegions: usa
     region: uk
     region_key: lhr

I need to iterate over the above map and the output should be in this format for each region

{{ $region }}:
    dnsAbbrev: {{ region_key }}
    abbrev: {{ region_key }}
    drRegion: {{ DrRegions }}

I tried the following Method 1

{{ range $reg, $props := .Values.regionInfo }}
                
{{ $reg }}:
dnsAbbrev: {{ $props.region_key }}
abbrev: {{ $props.region_key }}
drRegion: {{ $props.DrRegions }}
{{ end }}

Method 2

{{ range reg, props := .Values.regionInfo }}
{{ range $props }}
                
{{ $reg }}:
dnsAbbrev: {{ .region_key }}
abbrev: {{ .region_key }}
drRegion: {{ .DrRegions }}
{{ end }}
{{ end }}

I was getting couldn't range over map in both the scenarios... Any help or guidance on this is highly appreciated.

yaml kubernetes-helm

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'Looping through a map in helm

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