[OpenXCOM TftD] XcomUtil : 'High Explosive Damage' not working as intended

[MeridianOXC]

Opened on behalf of RonnieBasic: https://www.reddit.com/r/OpenXcom/comments/11ou8v3/openxcom_tftd_xcomutil_high_explosive_damage_not/

In my 2nd playthrough of OpenXCOM TftD, I tried setting the aforementioned mod to 'YES' and started a new campaign on Veteran difficulty. Steps to reproduce my issue

Come Mission #2, I am investigating a Small UFO landing site.

I equip my scout w/ a high explosive pack (whose damage is correctly updated to 200 in UFOPAEDIA)

Throw it at an UFO wall (tried various walls - diagonal, closer to the entrance...).
RESULT : Nothing happens after the detonation, the wall is intact.
EXPECTED RESULT : The outer UFO wall is blown open and I can enter the interior (as if I had used more elaborate explosives available later in the game).

Am I doing anything wrong please, did I not catch this mod?
OS : Win 10
Game version : GOG -> setup_x-com_terror_from_the_deep_2.1_(28046).exe
OpenXCOM build : nightly -> openxcom_git_master_2023_03_09_0153.exe

Not to forget : THANK YOU SO MUCH community for OpenXCOM!! Best thing for boomer gamers like me ever since 1990s <3.