Using ScriptEditor to execute Javascript, but this doesn't work:

Acrobat = Application('Adobe Acrobat');

Acrobat.activate();

delay(1);

this.getField("technotes").value = "This is only a test.";

Acrobat activates, but balks at this.Getfield, with error this.Getfield is undefined! Wha??? But if I tell applescript to do as javascript then this.getField works fine!