diff --git a/cargo-elevator.lua b/cargo-elevator.lua
index fba2027..6aadb4b 100644
--- a/cargo-elevator.lua
+++ b/cargo-elevator.lua
@@ -17,7 +17,7 @@ local FLOORS = {
             redstone.setOutput("top", false)
         end,
         storage = "create:item_vault_17",
-        elevator_storage = "bottom",
+        elevator_storage = "create:portable_storage_interface_11",
     },
     {
         match = function (input)
@@ -26,7 +26,7 @@ local FLOORS = {
         end,
         detect = function ()
             local relay = "redstone_relay_21"
-            peripheral.call(relay, "getInput", "top")
+            return peripheral.call(relay, "getInput", "top")
         end,
         call = function ()
             local relay = "redstone_relay_21"
@@ -44,7 +44,7 @@ local FLOORS = {
         end,
         detect = function ()
             local relay = "redstone_relay_22"
-            peripheral.call(relay, "getInput", "top")
+            return peripheral.call(relay, "getInput", "top")
         end,
         call = function ()
             local relay = "redstone_relay_22"
@@ -62,7 +62,7 @@ local FLOORS = {
         end,
         detect = function ()
             local relay = "redstone_relay_23"
-            peripheral.call(relay, "getInput", "top")
+            return peripheral.call(relay, "getInput", "top")
         end,
         call = function ()
             local relay = "redstone_relay_23"
@@ -98,7 +98,7 @@ local PKG_QUEUE = {
     end,
     check_cargo = function (self, inv, floors)
         for slot, item in pairs(peripheral.call(inv, "list")) do
-            local item_detail = peripheral.call(src, "getItemDetail", slot)
+            local item_detail = peripheral.call(inv, "getItemDetail", slot)
             for i, floor in ipairs(floors) do
                 if item_detail.package ~= nil and
                     floor.match(item_detail.package.getAddress()) then