🚀 go-pugleaf

If you're a beginning scripter, it's usually much easier to modify something that already works than to come up with a script from scratch. Here is an AppleScript whose job is to split a frame below the insertion point into linked frames. By modifying it to count the number of columns and the gutter width, it should be possible to rewrite this to do your column-splitting task. You'll want to open the InDesign dictionary in the script editor to see what the names of the various properties are.

tell application "Adobe InDesign CS2"
	set mySelection to item 1 of selection
	set myFrames to parent text frames of item 1 of selection
	set myFrame to item 1 of myFrames
	set myStory to parent story of item 1 of mySelection
	set mypage to parent of myFrame
	set TextBaseline to baseline of mySelection
	set OriginalBounds to geometric bounds of myFrame
	set OriginalTop to item 1 of OriginalBounds
	set OriginalLeft to item 2 of OriginalBounds
	set OriginalBottom to item 3 of OriginalBounds
	set OriginalRight to item 4 of OriginalBounds

	set geometric bounds of object reference of myFrame to {TextBaseline, OriginalLeft, OriginalBottom, OriginalRight}
	tell mypage
		set NewFrame to make text frame with properties {geometric bounds:{OriginalTop, OriginalLeft, TextBaseline, OriginalRight}}
	end tell
	if myFrame is text frame 1 of myStory then
		set properties of myFrame to {previous text frame:NewFrame}
	else
		set PreviousFrame to previous text frame of myFrame
		set next text frame of PreviousFrame to NewFrame
	end if
	set selection to insertion point 1 of myFrame
	tell text frame preferences of myFrame
		set first baseline offset to leading offset
	end tell
end tell

Rodney