if you make a copy of this line in your LUA code, it deos'nt work because the quote use for the label " text" hare not the good one.
you must write :
dataText = system.createData('{"text": "Hello World"}')
And "Hello Word" appear in your windlet
So the complet running code is:
panel = system.createWidgetPanel("Panel")
-- Display “Hello World”
widgetText = system.createWidget(panel, "text")
dataText = system.createData('{"text": "Hello Word"}')
system.addDataToWidget(dataText, widgetText)
-- Display a title “Title”
widgetTitle = system.createWidget(panel, "text")
dataTitle = system.createData('{"text": "Title"}')
system.addDataToWidget(dataTitle, widgetTitle)
-- Display a gauge filled at 60%
widgetGauge = system.createWidget(panel, "gauge")
dataGauge = system.createData('{"percentage": 60}')
system.addDataToWidget(dataGauge, widgetGauge)
-- Display “Weight 80 kg”
widgetValue = system.createWidget(panel, "value")
dataValue = system.createData('{"label": "Weight", "value": "80", "unit": "kg"}')
system.addDataToWidget(dataValue, widgetValue)
unit.show()