Example from my config:
{
"variables": [
{
"name": "tijd",
"expression": "$pumptimer.time",
"type": "number",
"unit": "s",
"label": "",
"discrete": false,
"acronym": ""
},
{
"name": "tijd-todo",
"expression": "$PumpHoursToDo",
"type": "number",
"unit": "s",
"label": "",
"discrete": false,
"acronym": ""
},
{
"name": "tijd-left",
"expression": "$PumpHoursToDo-$pumptimer.time",
"type": "number",
"unit": "s",
"label": "",
"discrete": false,
"acronym": ""
}
],
"xLink": "",
"id": "timer-display",
"name": "gemaakte uren / uren te gaan / resterende uren",
"class": "VariablesDevice"
}
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