Greetings Comm!
I am trying to calculate the sum a label in a collection but the result is incorrect. Check the below scs.
Appreciating your support.

Greetings Comm!
I am trying to calculate the sum a label in a collection but the result is incorrect. Check the below scs.
Appreciating your support.
The syntax would look like this:
Sum(Gallery1.AllItems,
Value(lblAmount.Text)
)
Here, lblAmount would be the name of the label in your first screenshot.