Trouble executing code inside command

In order to clean up my code and make things reusable, I made a new class for constructing a building programmatically. This class is called Structures. When i call the methods inside of that class in my onCommand method it doesn't execute as far as i can tell. The command gives no errors, but it just doesnt generate the building. I dont see the issue, any help? My Structure class takes in three integers, a CommandSender, and a command.

Code:

public class SuperStructures implements CommandExecutor {
 
    private MinecraftPlugin plugin;
    private Structures s;
 
    public SuperStructures(MinecraftPlugin plugin) {
     
        this.plugin = plugin;
     
    }
 
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[]arg) {
     
        if(cmd.getName().equalsIgnoreCase("createstructure")) {
         
            Player player = sender.getServer().getPlayer(sender.getName());
            Block b = player.getTargetBlock(null, 100);
            org.bukkit.Location loc = b.getLocation();
            World world = loc.getWorld();
         
            int posX = loc.getBlockX();
         
            int posY = loc.getBlockY();
 
            int posZ = loc.getBlockZ();
         
            s = new Structures(13, 25, 13, sender, world);
         
            s.createWallFront(posX, posY, posZ);
            s.createWallRight(posX, posY, posZ);
            s.createWallBack(posX, posY, posZ);
            s.createWallLeft(posX, posY, posZ);
            s.createRoof(posX, posY, posZ);
            s.createFloors(posX, posY, posZ);
            s.createFrontDoor(posX, posY, posZ);
         
         
            return true;
         
        }
     
        else {
         
            return false;
         
        }
     
    }
 
}

EDIT: after a few more tests it seems that i can use the command once, but then it no longer registers as a command and just chat text. Is there a limit to the number of blocks that can spawn or something?