diff --git a/main.py b/main.py
index eba90a9..92226db 100644
--- a/main.py
+++ b/main.py
@@ -158,17 +158,19 @@ def start_listen():
 
 
 def on_ready_for_otp(e: Event, commandor: CommandorPage):
-    print("on_ready_for_otp() called.")
+    logger.info("on_ready_for_otp() called.")
     global thread_event
     thread_event = e
 
 
 def start_book():
-    slot_number = 3
-    slot_sum = 8
+    slot_number = 1
+    slot_sum = 1
     for i in range(slot_number, slot_sum + 1):
         card_pool.reset()
         logger.info("will switch to " + str(i))
+        global current_card_pool_slot
+        current_card_pool_slot = i
         card_pool.switch_to_slot(i)
         modem_pool = ModemPool(get_devices_ports())
         modem_pool.reset_all_modems()