Would it be possible to get GraalVM on an Aternos server? (Nashorn removed since java 15)

I have recently found a plugin called ScriptCraft that allows you to develop your own mods in JavaScript. The problem is that Nashorn got removed in java 15 (and spigot requires at least java 16 to make a server) so GraalVM has to be used as a replacement. Would it be possible to get GraalVM downloaded on the server? Or, are there any work-arounds or other JavaScript engines I can use in Aternos?

Thanks,

penguins184

EDIT: Bringing the Minecraft server version down will also bring the Java version down allowing me to use Nashorn. I'm still wondering if I can use GraalVM on 1.19.2, though.

I came across the "change environment" feature as well, but the minimum was java 17 and there was no GraalVM.

Quote from Kurt

I am also fairly sure that GraalVM's JS engine can work in every standard jdk.

What do you mean? JDK has no javascript engine since version 15 - you mean the jjs command?

Quote from Julian

That plugin is not even available on Aternos

I'm still wondering if its possible or not. Might suggest it.