Need Help: Modifying xcode target with applescript

I’m trying to make a script that duplicates a target in xcode, rename the new target, and change values inside that target. I’m currently stuck with renaming the target and changing the values inside. How do I do this?

Currently, I am trying to use

tell application "System Events" to open myProject
tell application "System Events" to tell application process "Xcode"
	tell window 1 to tell group 1 to tell splitter group 1 to tell scroll area 1 to tell outline 1
		set targets_row to item 1 of (get every row whose value of text field 1 of group 1 is "Targets")
		tell targets_row
			if (value of UI element 1 of group 1 = 0) then
				click UI element 1 of group 1
			end if
		end tell
		set rowlist to (get every row whose value of text field 1 of group 1 is myOldName)
		if ((count of rowlist) is 1) then
			select item 1 of rowlist
		else if ((count of rowlist) is 2) then
			select item 2 of rowlist
		end if
	end tell
	set frontmost to true
	tell menu bar 1 to tell menu 1 of menu bar item "Edit"
		click menu item "Duplicate"
	end tell
	keystroke 5 using control down
	button click "Rename"
end tell

After renaming, I need to change the old values to new ones inside the target (when you double click a target for example, change info.plist file value from old info.plist to new info.plist) I really don’t know how to go about this.

Any help will be very much appreciated.