Hello There! I need your help.
I am trying to get difference between Previous Data and Current Data. I have tried with context node.
Now what Happing is It works ok for once only and then I get error. I think I have made some mistake with data type but unable to resolve.
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timeseries","z":"214cbd01.8af412","name":"Agg1_Current_Weight","topic":"ded1a0bfec43400f970e566f8263c6d3/BatchMix/Agg1_Current_Weight","topicLabel":"BatchMix/BatchMix/Agg1_Current_Weight","topicData":"{\"asset\":\"ded1a0bfec43400f970e566f8263c6d3\",\"assetName\":\"BatchMix\",\"aspects\":[{\"aspectId\":\"403f8515fd754ad298be50f5146fd9a8\",\"aspectName\":\"BatchMix\",\"variables\":[{\"variableId\":\"TN96ba993b8c6f\",\"name\":\"Agg1_Current_Weight\"}]}]}","assetName":"","selectedTopics":"","period":"60","offset":"0","mode":"lastValue","from":"","datetimepickerFrom":"","to":"","datetimepickerTo":"","timezoneoffset":0,"x":240,"y":560,"wires":[["3944171b.baf578"]]},{"id":"230f813b.7a6bbe","type":"read-context","z":"214cbd01.8af412","name":"","key":"Pre","context":"flow","x":510,"y":680,"wires":[["4f354b15.4e8194","641d0732.c03358"]],"_type":"node"},{"id":"d637c9f.3694638","type":"store-context","z":"214cbd01.8af412","name":"","key":"Pre","context":"flow","x":1430,"y":620,"wires":[],"_type":"node"},{"id":"24e1fd6f.4559a2","type":"ui_button","z":"214cbd01.8af412","name":"","group":"ef93e993.0b1d48","order":0,"width":0,"singleBrowser":false,"height":0,"passthru":false,"label":"button_Subtraction 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Value","format":"{{msg.payload}}","layout":"row-spread","x":740,"y":740,"wires":[]},{"id":"ef93e993.0b1d48","type":"ui_group","z":"","name":"Calculate Difference","tab":"951888b5.904548","order":2,"disp":true,"width":"6","collapse":false,"_type":"config"},{"id":"951888b5.904548","type":"ui_tab","z":"","name":"Old data","icon":"dashboard","order":2,"publicAccess":"true","fmAccess":"none","fmAccessType":"private","assetType":"","asset":"","assetName":"","assetText":"","image":"","description":"","hideTitleBar":false,"_type":"config"}]
