Switch node not accepting string as output

[koos147]

I used the script to install "4.0.9: Maintenance Release" on a raspberry pi 2 B After this i installed the "node-red-dashboard 3.6.5" from within the web gui.

When i add a switch its default is

I will change this to the string 1 and 0 (not a number) When i save this and re-open the node. it shows

As a workaround i tried to export the node config

When importing this the value looks good, but the node isn't working.

[
    {
        "id": "5cf2bec14b183a34",
        "type": "ui_switch",
        "z": "e2202e2fe14edf22",
        "name": "Gasfornuis",
        "label": "Gasfornuis",
        "tooltip": "Keuken",
        "group": "1dfeeb7fba195853",
        "order": 0,
        "width": 0,
        "height": 0,
        "passthru": false,
        "decouple": "true",
        "topic": "topic",
        "topicType": "msg",
        "style": "",
        "onvalue": 1,
        "onvalueType": "str",
        "onicon": "",
        "oncolor": "",
        "offvalue": "0",
        "offvalueType": "str",
        "officon": "",
        "offcolor": "",
        "animate": false,
        "className": "",
        "x": 630,
        "y": 140,
        "wires": [
            [
                "da3e82555b386235"
            ]
        ]
    }
   ]

For the people reading dutch... no it is simply the light above the gas stove. not the stove itself.