This article goes over the sum
function. The sum
function allows us to sum up one or more numerical variables within a collection.
Syntax
{collection  sum:'variableOne'}
You can also include math within the sum
function.
{collection  sum:'variableOne*variableTwo'}
Example
Transactions:


Code 
Meaning 
Result 
{transaction  sum:'numShares'} 
All shares issued 
7 
{transaction  sum:'numShares*pricePerShare'} 
Aggregate consideration received 
120 