tranny flush over 150000 miles

i have a 2004 dodge neon standard 2.0L, i dont particullarly have any transmission problems, i would like to have it flushed, i work at a quick lube and we do it there, but ive been told doing a trannyflush over 100000 miles if its never been done can be damaging, and i do know a little about chrystlers having smaller transmissions, im around 165000 miles or so and i dont know if its ever been flushed before i got it at 130000 miles, so basically im wondering if anyone out there did it on theirs this late, or any other information and opinions i should know before actually doing it,

thanks for any helppp!!!