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When I hit Switch All On button on the Zwave gui, it triggers the following command:
http://192.168.1.13:8083/ZWaveAPI/Run/d ... 7].Set[255]

However this returns the following error:
Error 500: Internal Server Error
Uncaught TypeError: Cannot read property 'instances' of undefined


Any ideas?

Thanks.
ARK

This button comes from Z-Cloud. We will hide it in future.

What would be the best way to program Switch All On in the java script? Is there a sample code that you can provide please?

Thanks.

for (var devId in zway.devices) {
zway.devices[devId].Basic.Set(VVV)
}