Set Bleed Box to .125" ONLY when objects bleed

[dbarbee]

We have a device with device with a harlequin rip that does not honor PDF page boxes. The rip will also print any objects outside of the page boxes such as crop marks even when they don't show. I am trying to create an automated workflow that requires no user intervention. The challenge is the final PDF needs to only have a bleed margin if an object bleeds. If nothing bleeds, the bleed box should equal the trim box. Is it possible to detect if an object crosses the trim box and then if true, set the trim box to .125" beyond the bleed box? Here is my action list so far:

Select all
Change media box to trim box size
Resize media box by (0.125 in, 0.125 in, 0.125 in, 0.125 in)
Move media box to 0.0
Change bleed box to media box size
Change art box to media box size
Change crop box to media box size

[freddyp]

Select objects close to the page edge
Select page if content is selected
Change boxes

As for all actions, if nothing is selected then nothing happens.