🚀 go-pugleaf

Something like this should do the trick...

tell application "Adobe InDesign CS3" 
	tell active document 
		--Standardize your coords 
		set zero point to {"0p", "0p"} 
		set horizontal measurement units of view preferences to picas 
		set vertical measurement units of view preferences to picas 
		set ruler origin of view preferences to page origin



		--Define Doc & Box height/width 
		set thisDocHeight to page height of document preferences 
		set thisDocWidth to page width of document preferences 
		set boxHeight to 3 --pi 
		set boxWidth to 12 --pi

		--Position in bottom right corner 
		--  using top,left,bottom,right coord system 
		set boxBounds to {thisDocHeight - boxHeight, thisDocWidth - boxWidth, thisDocHeight, thisDocWidth} 

		--Place the boxes 
		tell every page 
			set myTextBox to make new text frame with properties {geometric bounds:boxBounds} 
		end tell 
	end tell 
end tell