How can I change the parameter or key to replace k8s.cluster.name with cluster_name?

[vndereye]

After deployed splunk otel with helm chart in AWS EKS cluster to check the log in UI Splunk we should use in the query the k8s.cluster.name="CLUSTER_NAME", but we uses in the all reports cluster_name="CLUSTER_NAME"

When added in the values the clusterName: "My_Cluster" I can see in the configmap the following lines:
resource:
attributes:
- action: insert
key: k8s.node.name
value: ${K8S_NODE_NAME}
- action: upsert
key: cluster_name
value: My_Cluster
I made a manual change after the deployment to be able to modify the query key, because I couldn't find how to modify it in the values.