Illustrator Scripting :: Action To Change Width Of Image?

I created an action to change the width of an image. I execute the action using DoScript javascript method.
 
The first action Obj1 will select the whole image and second action Obj2 will open the transform panel and change the width of the image.
 
app.Open("D:LWW_Castoff45991_09_03.eps")       
app.DoScript("Obj1", "LWW")       
While (app.ActionIsRunning)           
Thread.Sleep(500)       

[Code]...

In the above code, the second action 'Obj2' is not getting executed. Both the actions  are getting executed individually. Let me know  the problem and how  to execute both the actions.