Dead stoopid AppleScript question: finding the tell target
 

Finding that my OmniOutliner AppleScript chops aren't translating as I'd like. Having trouble saying, "Give me the text of the selected task in OmniFocus". Tried examining a Dan Byler script, but his document tell targets are erroring here. Can someone lend me a hand?

tell application "OmniFocus"

-- get the current selected task
set MyWindow to front window
set MyContent to content of MyWindow
set MySelection to a reference to selected trees of MyContent
set aTask to value of first item in MySelection

name of aTask
--note of aTask
end tell