Change elastic user password using kibana

[Dragon9 (Dragon_master)]

i set bootstrap passoword using enviroment variable.
application work fine .but when i change password of elastic user using kibana
error comes

Kibana status is Red

my elasticsearch yaml snippet

containers:
      - name: elasticsearch
        image: docker.elastic.co/elasticsearch/elasticsearch:7.2.0
        resources:
            limits:
              cpu: 1000m
            requests:
              cpu: 100m
        ports:
        - containerPort: 9200
          name: rest
          protocol: TCP
        - containerPort: 9300
          name: inter-node
          protocol: TCP
        volumeMounts:
        - name: data
          mountPath: /usr/share/elasticsearch/data
        - name: elasticsearch-yaml
          mountPath: /usr/share/elasticsearch/config/elasticsearch.yml
        - name: path-repo
          mountPath: /usr/share/elasticsearch/config/elastic-certificates.p12
        env:
          - name: cluster.name
            value: k8s-logs
          - name: node.name
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: discovery.seed_hosts
            value: "es-cluster-0.elasticsearch"
          - name: cluster.initial_master_nodes
            value: "es-cluster-0"
          - name: ES_JAVA_OPTS
            value: "-Xms256m -Xmx256m"
          - name: ELASTIC_PASSWORD
            value: "elastic"

my kibana yaml snippet

server.name: kibana
server.host: "0"
elasticsearch.hosts: [ "http://10.109.226.97:9200" ]	
#xpack.monitoring.ui.container.elasticsearch.enabled: true
elasticsearch.username: "elastic"
elasticsearch.password: "elastic"

i think this happens because elastic password define in kibana.yml

any solution for this to change everything in runtime