Replacing blocks within 2 locations

I've been trying to replace all blocks that aren't grass with grass within 2 locations.

Code:java

 
int xS = rm.getRegion(player + "shed2").getMinimumPoint().getBlockX();
int zS = rm.getRegion(player + "shed2").getMinimumPoint().getBlockZ();
int xE = rm.getRegion(player + "shed2").getMaximumPoint().getBlockX();
int zE = rm.getRegion(player + "shed2").getMaximumPoint().getBlockZ();
int y = rm.getRegion(player + "shed2").getMaximumPoint().getBlockY();
for (int x = xS; x <= xE; x++){
for (int z = zS; z <= zE; z++){
Block checkedblock = plugin.getServer().getWorld("world").getBlockAt(xS, y, zS);
if (checkedblock.getType() != Material.GRASS){
checkedblock.setType(Material.GRASS);
}
}
}
 

The region exists and the variables equal the following:
xS = -69
zS = 180
xE = -53
zE = 196
y = 95

But its not replacing the blocks :/

 

while(condition && condition)

{
//code
}

 

xLoGiiKzZo
Shouldn't getting a block from a built location be easier than that?

 

Two things:

• Don't repeatedly call getWorld() inside your for loops - that's a lot of unnecessary work for a method whose return value isn't dependent on the loop variables. Call it once before the loops.
• (the cause of your problem) You're checking the block at (xS, y, zS) each time, but you want to be checking the block at (x, y, z).