how to disable password complexity via command

hello

i have spent hours searching to find a command or script (powershell, cmd, VB, registry...) to disable group policy password complexity. few solutions has been delivered on the net but none of them works.

i wonder how what a pity if we can't do such simple thing in Microsoft windows

i really need that because i have created a script which contains many lines which automates windows customization which i always need in my classrooms for testing & teaching purposes