Helpspawnx code

I would like to have the /spawnx command on my server. Unfortunately I don't know how to code it.
I know there are servers that have this command. I searched for it in club559's and the phoenix source but
I wasn't able to find one. Maybe I'm just dumb but it would be nice if someone could post the code for me.
Thanks in advance.

Wrong section.

This belongs in the Help section of the RotMG private server section.

The /spawnx command is in Trapped's source from his github

Using /spawn works like /spawnx as you can spawn as many entities as your heart desires.