Commands, reading from a .yml

Hello all :3
I need some help with a command which withdraws information from a .yml file.
What my plugin does is when a player places a piston, it will write a 1 behind his name.
WHen you place another one, 2 and so on.

What i want is when a admin, so with permissions (I can fix that myself) types ''/PistonAlert Name'' the plugin will search for the player ''Name'' in the .yml and returns a amount.

Can someone please help me with this, i can send him all my classes :3
Thanks!

No one? There must be a pro developer :3

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

 

Well, bukkit has a pretty good configuration API. You could create a file, then a new Configuration(file).
From there, all you have to do is :
to read : config.getInteger(playername);
to write : config.setProperty(playername, count);

 

Ill try this API, thanks