Hello @Ismail,
This is not working like that.
You’ve just directly used sum() function which accept only numeric array values like [2,5,7,8] OR you can use like this sum(value1;value2;value3;[so on]). ⇒https://www.make.com/en/help/functions/math-functions#sum--array-of-values----sum-value1-value2------
Check this first your array is not returned like I’ve mentioned above.
If you’re in Make you’ve to understand this first and think about it.
⇒ Most of the time array always has multiple collections. The collection has multiple items in key: value pairs. → https://www.make.com/en/help/tools/json#collection-vs--array
Now in your case first check that key under the collection which you need to use as a calculation. If there are multiple calculations you need to perform then use the module Set Multiple Variables. This is my created response on another post, it’s not the same but the function usage screenshot is helpful Need Help Accessing Results from All Modules Before Numeric Aggregator in Scenario - #4 by dilipborad
Your example function syntax looks like this.
sum(map(array;key))
I hope you get it.
