How to Modify AI Perception Settings Outside the AIController

Hi,
I’m using AIController for NPCs with AI Perception. Is it possible to change an AI Perception parameter from a Blueprint? Specifically, I want to increase the sight radius for a ranged enemy compared to melee enemies. I can’t find a way to turn the AI Sight parameters into variables for dynamic adjustment.

unless they have put something new in 5.5 it is not possible

but you can set a very high range and then check the distance when the signal arrives