Stop vines from growing?

Hello guys, I am typing this from my phone because it would not let me sign in on my laptop,
so it may have less detail than expected. I have been working on some projects with a friend and he was using vines in a build, so like anyone he asked me to make it so vines wouldn't grow. I tried the block spread and grow event, but can't seem to get it to work. :/ does anyone know the issue? I already tried googling it for a while and I do not want to use world guard.

 

@flash110 the BlockSpreadEvent will do the trick. What have you tried with it that didnt work?

 

Make sure you check to see if it's vines.

Code:

if(event.getSource().getType() == Material.VINE)

You're also doing something wrong then if it doesn't work. (I bet you a damn nickel you didn't register your events).

Looks to me, this is how WorldGuard does it.

 

@FrostedSnowman I thought it would be easily deduced and i didnt have to point that out, but good you did