Can i help me how to use variable in OpenSTA.
Look at the reference here: http://opensta.org/docs/sclref/scl-variables.htm
Define the variable in the definitions section e.g.
Use the variable in the code section e.g.
SET MyVariable = "hello here is my variable"
or append it to some other variable
SET MyVariable2 = "hello"+myVariable
If you give details of what you're trying to do you might get more help.
Everywhere's within walking distance if you have enough time.