[SOLVED] Node-Red and previous.state

[MDAR (Stuart Hanlon, UK importer of Velbus hardware)]

@vzorglub

if (msg.payload.type = ‘ItemStateChangedEvent’) { var oldValue = msg.payload.payload.oldValue; // Do what you want with the variable oldValue } else { return; } msg.payload = oldValue; return msg;

Thanks

When I paste it into a Function node, it instantly shows this “Assignment in conditional expression” error

and “oldValue used out of scope”