Wont work properly

Hey, i'm using PPthief but it wont steal from farmes

import org.osbot.script.Script;
import org.osbot.script.ScriptManifest;

import javax.swing.JComboBox;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import java.awt.Color;
import java.awt.Graphics;

@ScriptManifest(name = "PPThief", author="PengPhin", version = 1.0D, info = "Only Supports upto Master Farmer")
class PPThief extends Script {

    enum State {
        INPUT, IDLE, ROBBING,
    }

    Npc[] Npcs = [
            new Npc("People level 1", [ 1, 2, 3, 4, 5 ] as int[]), // Add new NPCs here
            new Npc("Farmer    level 10", 7 as int[]),
            new Npc("Warrior Women    Level 25", 18 as int[]),
            new Npc("Rogues    Level 32", 187 as int[]),
            new Npc("Cave Goblins Level 36", [ 1822, 1823, 1824, 1825 ] as int[]),
            new Npc("Master Farmer Level 38", [ 2234, 2235] as int[]),
                ] as Npc[];

    State state = State.INPUT;
    Npc Npc = null;
def xp = 0
def amount = 0

    void onStart() {
        if (state == State.INPUT) {
            showInput();
        }
    }

    int onLoop() {
        switch(state) {
            case State.ROBBING:
                return steal();
        }
        return 1000 + gRandom(400, 800);
    }

    int steal() {
        def npc = closestNPC(Npc.getIds());
        if (npc != null) {
            if (selectEntityOption(npc, "Pickpocket")) {
                return 2000 + random(200, 500);
            }
        }
        return 1000 + random(200, 1000);
    }

    void onPaint(Graphics g) {
        g.setColor(new Color(0.1f, 0.1f, 0.1f, 0.7f));
        g.fillRect(3, 308, 513, 30);

        g.setColor(Color.GREEN);
        g.drawString("PengPhins Robber | Xp gained: ${xp * 43} | Succeeds: ${amount}", 10, 327);
    }

    void showInput() {
        JPanel panel = new JPanel();
        String[] Npcs = new String[this.Npcs.length];
        for(int i = 0; i < Npcs.length; i++) {
            Npcs[i] = this.Npcs[i].getName();
        }
        JComboBox combo = new JComboBox(Npcs);
        panel.add(combo);
        int ret = JOptionPane.showConfirmDialog(null, panel, "Select Npc", JOptionPane.OK_CANCEL_OPTION);
        if (ret == JOptionPane.OK_OPTION) {
            Npc = this.Npcs[combo.getSelectedIndex()];
            state = State.ROBBING;
        } else {
            showInput();
            //TODO: Add Banking, Food Support
        }
    }

void onMessage(String message) {
if (message == "You pick the Master Farmer's pocket.") {
xp++
amount++
}
}


    class Npc {

        private final String name;
        private final int[] ids;

        public Npc(String name, int[] ids) {
            this.name = name;
            this.ids = ids;
        }

        public String getName() {
            return name;
        }

        public int[] getIds() {
            return ids;
        }


    }

}