i think it is out put parameter, i can pass the values from 
subtest to main test

We can retreive the output values from Result tables while 
execution is going on, and we can send it to other actions, 
and we can use it for other input sets als in our 
application.

Output values are used to view the values of the objects 
while running the script. It captures the values of the 
objects while running and output them into data table and 
they can be used for input data.

The main purpose of the output value is to use the output 
value of one operation can be stored and use the same value 
as an input into some other action/operation

steps to be followed
1. Right click on the object in active screen and select 
insert out put value.
2. select value to be out put and select before/current 
option so that one line of script will be generated which 
takes the value of the object generated during run time and 
stores it in Run-Time datatable.
3.We can use the values from Run-Time table and use them in 
other action.