Use Split node
and Join node
to manipulate your data array into string separated with newline
character before sending it to be payload of Notification
. Notification however does not show multiple lines. It does it magic to join lines into one and makes itself wider.
[{"id":"8c90b3f2.5949","type":"split","z":"18c83e13.bcdd42","name":"","splt":"\\n","spltType":"str","arraySplt":1,"arraySpltType":"len","stream":false,"addname":"","x":560,"y":940,"wires":[["c296e15f.a2cb1"]]},{"id":"c296e15f.a2cb1","type":"join","z":"18c83e13.bcdd42","name":"","mode":"custom","build":"string","property":"payload","propertyType":"msg","key":"topic","joiner":"\\n","joinerType":"str","accumulate":false,"timeout":"","count":"","reduceRight":false,"reduceExp":"","reduceInit":"","reduceInitType":"","reduceFixup":"","x":700,"y":940,"wires":[["19900b90.8eef94"]]},{"id":"168d41d8.894a6e","type":"inject","z":"18c83e13.bcdd42","name":"","topic":"","payload":"[123,456,789]","payloadType":"json","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":390,"y":940,"wires":[["8c90b3f2.5949"]]},{"id":"19900b90.8eef94","type":"debug","z":"18c83e13.bcdd42","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":870,"y":940,"wires":[]}]