changing format of text in illustrator

Hi!

i’m setting applscript to make a new text frame with contents in it:

set mytext to make new text frame with properties {contents: “Test only”}

the text frame willl be created in illustrator but I don’t have any idea how to change the formatting of the text to use Helvetica instead of the default font in Illustrator.

I’ve tried this:

set the text font of text range of selection of document 1 to {name:“Helvetica”, family: “Helvetica”,style:“Medium”}

but nothing happens… or it gives an error “ojbect expected” what does it mean?

Any ideas? (This is Illustrator CS) By the way…

Thanks so much!!!