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diff --git a/npc/other/inventory_expansion.txt b/npc/other/inventory_expansion.txt
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+++ b/npc/other/inventory_expansion.txt
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+//================= Hercules Script =======================================
+//=       _   _                     _
+//=      | | | |                   | |
+//=      | |_| | ___ _ __ ___ _   _| | ___  ___
+//=      |  _  |/ _ \ '__/ __| | | | |/ _ \/ __|
+//=      | | | |  __/ | | (__| |_| | |  __/\__ \
+//=      \_| |_/\___|_|  \___|\__,_|_|\___||___/
+//================= License ===============================================
+//= This file is part of Hercules.
+//= http://herc.ws - http://github.com/HerculesWS/Hercules
+//=
+//= Copyright (C) 2018  Hercules Dev Team
+//= Copyright (C)  4144
+//=
+//= Hercules is free software: you can redistribute it and/or modify
+//= it under the terms of the GNU General Public License as published by
+//= the Free Software Foundation, either version 3 of the License, or
+//= (at your option) any later version.
+//=
+//= This program is distributed in the hope that it will be useful,
+//= but WITHOUT ANY WARRANTY; without even the implied warranty of
+//= MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//= GNU General Public License for more details.
+//=
+//= You should have received a copy of the GNU General Public License
+//= along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//=========================================================================
+//= Inventory expansion
+//=========================================================================
+
+-	script	inventory_expansion	FAKE_NPC,{
+	end;
+
+OnInvExpandRequest:
+	if (countitem(Inventory_Extension_Coupon) < 1) {
+		expandinventoryack(EXPAND_INV_MISSING_ITEM);
+		end;
+	}
+	if (getinventorysize() + INVENTORY_INCREASE_STEP > MAX_INVENTORY) {
+		expandinventoryack(EXPAND_INV_MAX_SIZE);
+		end;
+	}
+	expandinventoryack(EXPAND_INV_ASK_CONFIRMATION, Inventory_Extension_Coupon);
+	end;
+
+OnInvExpandConfirmed:
+	if (countitem(Inventory_Extension_Coupon) < 1) {
+		expandinventoryresult(EXPAND_INV_RESULT_MISSING_ITEM);
+		end;
+	}
+	if (getinventorysize() + INVENTORY_INCREASE_STEP > MAX_INVENTORY) {
+		expandinventoryresult(EXPAND_INV_RESULT_MAX_SIZE);
+		end;
+	}
+	delitem(Inventory_Extension_Coupon, 1);
+	if (expandinventory(INVENTORY_INCREASE_STEP) == true) {
+		expandinventoryresult(EXPAND_INV_RESULT_SUCCESS);
+	}
+	end;
+
+OnInvExpandRejected:
+	end;
+}