An Outputvalue is  a step  in which one or more values are 
captured at a specific point in Test  and stores for the 
duration of Run.

An output value is a value retrived during the test run and 
entered into your data table. You can subsequently use this 
output value as input data in your test. This enables you 
to use data retrived during a test in other parts of the 
test.

Output value enables us to view the value of an object 
while running. Output values retrive the data from the 
objects and output them into the data table.