how do I display dialog to ask for the range in this script?

tell application "Microsoft Excel"
		set x to string value of range "D19:D29"
	end tell
set range to text returned of (display dialog "Enter range" default answer "D19:D29")

tell application "Microsoft Excel"
    set x to string value of range "\"" & range & "\""
end tell


Cheers,

Craig

once again saved the day!