Dear Hans, Thank you for your reply. I have tested using "JS(Set_Field{FFD2,1})" before, but it didn't work. I have tried once more. But it is same before.(After click "restart", I have a blank window and nothing happens when I click "here" again.) If it works in your machine, that is the problem of my macbook. I am using Macbook and OSX 10.6. Thank you again. Best regards, Dalyoung