Now I have a headache after doing research and reading about parallax.

From what I understand with an AO scope a target at a known distance and power setting of the scope, parallax can be adjusted or eliminated by proper adjustments of the scope. So lets say you have a target out at 250 yds and the scope is on 6x. You adjust the AO correcting the parallax, mark your setting on the scope and your good to go. Now lets say you look at a target 350 yds away and adjust the power setting to 14x. From what I understand the parallax will change, so another correction of the AO will need to be made and marked.

So here is the question. At each power setting does parallax change or does parallax only change on how far or close the target is regardless of power setting?

Hope this makes sense on what I'm trying to ask.