How do I launch the forge server instead of the vanilla one?

[ToxicSamurai]

Whenever I try to launch the server, it launches the vanilla one that was downloaded. I tried changing the ServerLauncher.bat from:

java -Xmx4G -Xms1G -jar minecraft_server.1.12.2.jar nogui
PAUSE

to:

java -Xmx4G -Xms1G -jar forge-1.12.2-14.23.5.2852.jar nogui
PAUSE

but it doesn't load the server as:

no main manifest attribute, in forge-1.12.2-14.23.5.2852.jar

Attached is my folder, thanks!

[LexManos]

1.12 is no longer supported on this forum.

Please update to a modern version of Minecraft to receive support.