Take an array and return the total values in the array.
If you specify something that does not represent a number, NaN (indicating that it is not a number) is returned.
If an element in the array is empty, its value is not added.
In the following example, suppose the #1 action was to retrieve records, such as Retrieve All Records. Calculate the sum of the values in the Number column of the retrieved records in this #1 action.
= sum($1.Number)
In the following example, "" is not treated as a target, so the sum returns 12.
= sum([1, 2, "", 4, 5])