U3421WE, DDPM 2.1.1.12, CLI command requires confirmation from user via GUI?

Hello,

I used to configure brightness of my Dell U3421WE monitor depending on day time.

Windows 11, Task Scheduler, pwsh script.

I used CLI command with DDM 2. It was working perfect.

.\DDM.exe /0:writebrightnesslevel 20 /1:writebrightnesslevel 20

After upgrading to DDPM 2. (2.1.1.12,  latest version just downloaded from the dell website), I figured out that they've broken backward compatibility and now I have to use a different tool and different command syntax.

I've read that unclear manual from Dell Display and Peripheral Manager for Windows | Version 2.1.1 Administration Guide

There is no section that explains how to set different parameters.

And now command to set brightness should look like:

.\Plugins\CLI.Subagent> .\CLI.Subagent.exe /set -Display=BrightnessLevel -value=40

Questions:

Why this tool does not apply my CLI changes without confirmation from GUI-side windows notification?

<Prohibited word or character substitution used. See the Forum Code of Conduct. DELL-Admin>, how did you expect users should run cli tool if it requires GUI confirmation to make a job? CLI is a non-gui way to do things.

I've switched all notifications off in dell DDPM app, it just does not work, it does not apply my brightness changes. Moreover the cli tool is freezed waiting somebody confirms action in notification. If I've disabled all notifications then it stays freezed infinity time.

Is there a way to just execute command to set brightness value without that redundant bells and whistles?

Tim