mychart/values.yaml
 
 global:
   orgdomain: com.muthu4all
 
 
 mychart/charts/mysubchart/templates/configmap.yaml
 and
 mychart/templates/configmap.yaml
 
 
 orgdomain: {{ .Values.global.orgdomain }}
 
 
 helm install --dry-run --debug subchartoverride mychart