function sql_communication(parameters)
	print "executing sql_communication"
	dofile("./config.lua")
	env = assert(luasql.mysql())
	con = assert(env:connect(sql_db, sql_user, sql_pass, sql_host, sql_port))
	result_plr = assert(con:execute("SELECT * FROM z_ots_comunication WHERE `type` = 'login';"))
	todo = result_plr:fetch({}, "a")
	while todo do
		id = tonumber(todo.id)
		action = tostring(todo.action)
		delete = tonumber(todo.delete_it)
		cid = getPlayerByName(tostring(todo.name))
		if isPlayer(cid) == TRUE then
			local itemtogive_id = tonumber(todo.param1)
			local itemtogive_count = tonumber(todo.param2)
			local container_id = tonumber(todo.param3)
			local container_count = tonumber(todo.param4)
			local add_item_type = tostring(todo.param5)
			local add_item_name = tostring(todo.param6)
			local received_item = 0
			local full_weight = 0

			local free_cap = getPlayerFreeCap(cid)
			if full_weight <= free_cap then
				if add_item_type == 'container' then
					local new_container = doCreateItemEx(container_id, 1)
					local iter = 0
					while iter ~= container_count do
						doAddContainerItem(new_container, itemtogive_id, itemtogive_count)
						iter = iter + 1
					end
					received_item = doPlayerAddItemEx(cid, new_container)
				else
					local new_item = doCreateItemEx(itemtogive_id, itemtogive_count)
					received_item = doPlayerAddItemEx(cid, new_item)
				end
				if received_item == RETURNVALUE_NOERROR then
					doPlayerSendTextMessage(cid, SHOP_MSG_TYPE, 'You received >> '.. add_item_name ..' << from OTS shop.')
					delete = assert(con:execute("DELETE FROM `z_ots_comunication` WHERE `id` = " .. id .. ";"))
					assert(con:execute("UPDATE `z_shop_history_item` SET `trans_state`='realized', `trans_real`=" .. os.time() .. " WHERE id = " .. id .. ";"))
				else
					doPlayerSendTextMessage(cid, SHOP_MSG_TYPE, '>> '.. add_item_name ..' << from OTS shop is waiting for you. Please make place for this item in your backpack/hands and wait about '.. SQL_interval ..' seconds to get it.')
				end
			else
				doPlayerSendTextMessage(cid, SHOP_MSG_TYPE, '>> '.. add_item_name ..' << from OTS shop is waiting for you. It weight is '.. full_weight ..' oz., you have only '.. free_cap ..' oz. free capacity. Put some items in depot and wait about '.. SQL_interval ..' seconds to get it.')
			end
		end
		todo = result_plr:fetch (todo, "a")
	end
	con:close()
	env:close()
	local eventServ = addEvent(sql_communication, SQL_COMUNICATION_INTERVAL, parameters)
end