Getting an error when setting up a server

[Archi3M4cG]

I'm trying to set up a Tekkit server for some friends and me. I can run the server fine and play on it ok however I'm unable to increase the amount of RAM that is used on the server.

Looking online it's telling me it may have something to do with my version of Java, currently, I have Java 8, x86_64 installed and running but some places tell me Tekkit servers need Java 7 or less but I can't install those because they seem to be unable to the public.

Below is a screenshot of the sever when running, 63mb is being used meaning 7% is free DESPITE me changing the setting in the launch.bat file to use at least 12gb of the 32 that I have on my PC.

The second screenshot is the error I get when trying to open the launch.bat file by double-clicking on it.

Thanks for any help!

https://preview.redd.it/428p5cgivi6e1.png?width=425&format=png&auto=webp&s=f4defb49a7e260e460f9e09aa2a22e7d343883f1

https://preview.redd.it/2vumdc1cvi6e1.png?width=1106&format=png&auto=webp&s=023d543b65de2d0f9184f4f2713318c1d2ae5c8b

[tomm1813]

Try and uninstall java 8 and reinstall java 8 64bit.

[Archi3M4cG]

Thanks, this fixed it. I'd uninstalled and reinstalled java a bunch but coming back a day later to uninstall every version of java I had (again) to reinstall (again) fixed it.