How to fix this error on Matlab analysis for your email notification?

Hi Team

I have configured using the URL link for email notification below, basically i want to get a notification from email if there is an alert about my channel fields. Question is do i have to change all the default setting when using Matlab analysis as per my own channelID, api key, field names etc?

https://www.mathworks.com/help/thingspeak/analyze-channel-data-to-send-email-notification-from-ifttt.html

Error using webwrite (line 130)

Expected URL to be nonempty.

Error in Trigger Email from IFTTT 1 (line 41)

webwrite(iftttURL,'value1',lastValue,'value2',

Answer 1

[Hans Scharler]

Is your channel private? If so, then you need to supply a Read API Key with the URL.

url=strcat('https://api.thingspeak.com/channels/',string(channelID),'/fields/1/last.txt?api_key=XXX');