1st: U must copy mod “Remove Range Siege Unit” from folder “subscribed” to “local”. All file in folder “subscribed” auto roll back to server version.
2nd:
click button in circle from top down.
note
The 3rd circle is "key-value-strings-utf8.txt
The 4th circle is "key-value-modded-strings-utf8.txt
the 5th circle (DRS). this is folder (name is DRS).
then click open.
3th: when AGE3 open, focus “effects” tab, scroll down to 800th effect and modify it.
note Catapult is not real name. Name’s all unit (include Tech upgrade) is at “Techs” tab.
Finality: After u save mod, u only could test on single match (not multiplayer). Then u must public mod to play multiplayer.