i think it is working

main.py

@@ -1,13 +1,32 @@
 from lightmatchingengine.lightmatchingengine import LightMatchingEngine,Side,Trade,Order
 from econ.exchange import Exchange
+from econ.simulation import Simulation
+from econ.business.Price_Believe_Business import Price_Believe_Business
 
+
+
+
+w="world"
 cx=Exchange()
-cx.add_to_account(0,"balance",1500)
-cx.add_to_account(1,"food",50)
-cx.add_to_account(2,"food",50)
+cxs=[cx]
+# Init World
+cx.add_to_account(w,"balance",15000)
+cx.add_to_account(w,"Raw_Wood",1000)
+cx.add_to_account(w,"Raw_Stone",1000)
+cx.submit_order(w,"Raw_Stone",1000,0,Side.SELL)
+cx.submit_order(w,"Raw_Wood",1000,0,Side.SELL)
+# Create Demand
+cx.submit_order(w,"Wood",10,10,Side.BUY)
 
-order_1=cx.submit_order(1,"food",50,2,side=Side.SELL)
-order_2=cx.submit_order(2,"food",50,1,side=Side.SELL)
-order_3=cx.submit_order(0,"food",100,2,Side.BUY)
+sim=Simulation()
+bus=Price_Believe_Business(1,{
+      'name': 'Wood',
+      'amount': 1,
+      'craft': {
+              'Raw_Wood': 1,
+               }
+    },50,cxs,sim)
 
+for i in range(100):
+    sim.tick_random_order()
 print("help")