Solved FileConfiguration

Hello,
I was wondering if it was possible to actually delete an entry in a FileConfiguration.
Here is the syntax:
I register a sign locations, infos in line, etc.. And, I want that, if the sign is break, the data in the FileConfiguration is deleted with it (I know it's not the best way to stock infos in a fileconfiguration, but I did like that here..). After searching, i'm still not sure if we can.
I don't want to set the value to null, I want to delete the entry.

FileConfiguration format:
http://pastebin.com/4bvEdxhX
According to the example I gave, I would like to delete "blabla" and all it's sub-entries.

Thanks

 

@Sneling Set it to null.

 

I tried setting the "blabla" to null, changes nothing. Let me test something else. If it works, ill post.

EDIT: Didn't work...

 

@Sneling Make sure to save the config.

 

Actually, the "error" comes from somewhere else in the code... Tho i'm not sure why it does that.
The error is that the if() isn't returning true...
http://pastebin.com/mBVyiLJd

Saving:
http://pastebin.com/GAsUiaJG

 

@Sneling Post the stack-trace and the entire relevant class.

 

@Skionz There is no stack trace, as there is no error. It just doesn't change anything.
SignsListeners:
http://pastebin.com/wZTG7aFr

BreakSignManager:
http://pastebin.com/x2wwGcRn

SignsDataManager:
http://pastebin.com/pidLZMfG

 

@Sneling My bad, I misinterpreted your other message. Trying checking if the location in the config is the same as the one on the sign by printing out all of the values.

 

@Skionz It actually is. I'll try getting this world thing out.

EDIT: Still, without world... This thing is getting really strange.

After some recoil on my code, I can see my error.
In the BreakSignManager, I check if the location are exactly the same, but the X,Y,Z are not, as they true one is in double( I mean by that, with probably 00.2545..), and the virtual location is in int.

Just change the if(...) to: if(e.getBlock().getLocation().getBlockX() == l.getBlockX() && e.getBlock().getLocation().getBlockY() == l.getBlockY() && e.getBlock().getLocation().getBlockZ() == l.getBlockZ())

EDIT by Moderator: merged posts, please use the edit button instead of double posting.