Update interval of Victron output node in Node-RED flow

flow.json

[
    {
        "id": "d1dcac4acb3637a1",
        "type": "inject",
        "z": "bb43ebac.8ecdd8",
        "name": "interval every 30 sec",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "30",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "x": 280,
        "y": 740,
        "wires": [
            [
                "89472201c34427cd"
            ]
        ]
    },
    {
        "id": "89472201c34427cd",
        "type": "change",
        "z": "bb43ebac.8ecdd8",
        "name": "Read flow.myvalue",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "myvalue",
                "tot": "flow"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 530,
        "y": 740,
        "wires": [
            [
                "1e69c47d230e906b"
            ]
        ]
    },
    {
        "id": "8e295dd58c173a56",
        "type": "change",
        "z": "bb43ebac.8ecdd8",
        "name": "Store value to flow.myvalue",
        "rules": [
            {
                "t": "set",
                "p": "myvalue",
                "pt": "flow",
                "to": "payload",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 580,
        "y": 680,
        "wires": [
            []
        ]
    },
    {
        "id": "731cae8e9495ceb5",
        "type": "inject",
        "z": "bb43ebac.8ecdd8",
        "name": "irregular updating value",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "1",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "",
        "payloadType": "date",
        "x": 290,
        "y": 680,
        "wires": [
            [
                "8e295dd58c173a56"
            ]
        ]
    },
    {
        "id": "1e69c47d230e906b",
        "type": "influxdb out",
        "z": "bb43ebac.8ecdd8",
        "influxdb": "9cb94f389c863d5f",
        "name": "store myvalue to influxdb",
        "measurement": "",
        "precision": "",
        "retentionPolicy": "",
        "database": "database",
        "precisionV18FluxV20": "ms",
        "retentionPolicyV18Flux": "",
        "org": "organisation",
        "bucket": "bucket",
        "x": 770,
        "y": 740,
        "wires": []
    },
    {
        "id": "9cb94f389c863d5f",
        "type": "influxdb",
        "hostname": "127.0.0.1",
        "port": "8086",
        "protocol": "http",
        "database": "myvalues",
        "name": "influxdb",
        "usetls": false,
        "tls": "",
        "influxdbVersion": "1.8-flux",
        "url": "http://192.168.1.1:8086",
        "rejectUnauthorized": true
    }
]