Pages.app delete a range of text with Applescript?

Hi,

I can't manage to delete from Applescript a part of my Pages document delimited by two placeholders.

I can get the two placeholders, but how can I construct the rich text object that represents everything between them?

tell application "Pages"

set myDoc to front document

tell myDoc

set startPlaceHolder to (the first placeholder text whose tag is "startTag")

set endPlaceHolder to (the first placeholder text whose tag is "endTag")

set startChar to character 1 of startPlaceHolder

set endChar to last character of endPlaceHolder

set toDelete to (startCharthruendChar)

end tell

end tell

Thanks for the help

JD