GetRO Property is used for retrieving the property of an 
runtime object 

For Example
To get whether button is enabled or not.
Val = Browser("Browser name").Page("Page name").WebButton
("Login").GetROProperty("disabled")
To get whether a checkbox is on or off.
Val = browser("Browser name").Page("Page name").WebCheckBox
("Test").GetROProperty("Value")

SetRo propert for modifying the property of an object

see noor wht u said i.e meaning correct in getroproperty 
but what u written the code is wrong.and setroproperty also 
wrong.


   because there is no(like setroproperty) in QTP

properties in QTP are SetToProprety, GetToProperty, 
GetRoProperty.

Regards,
TESTER

Gettoproperty is used for getting runtime values of an 
application  On the other hand Settoproperty is for Seting 
the runtime test object properties

For Settoproperty:

Suppose there is one screen named "TESTING" and another 
screen named TESTINGPROCESS"
Now by using settopreperty we can do operations 
on "TESTINGPROCESS" screen by using "TESTING" screen.
Here no need of TESTINGPROCESS screen properties in Object 
Repository