Can't seem to add all items in an array

Question
#1

Hello there!

I have some numbers (cost prices of items) in an array which are the values shown under the price column. So at the click of a button, the sum of all the numbers in the array as shown in the alert box in the screenshot below needs to be calculated and displayed where the “$0” is shown in the screenshot below. However, this does not seem to happen. I have tried the “SUM” method, “SUM_BY_KEY” method and also just simply adding the first and 2nd element of the array which also doesn’t work. Can someone please help me with this?

Thanks in advance!

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#2

Be careful, check if your numbers are really numbers and not strings.

#3

Thanks for the reply! They were strings before and hence the method never worked. But I thought after changing it to actual numbers it will be fine but it still didn’t work sadly.