diff --git a/src/brulijam/gps-tower.lua b/src/brulijam/gps-tower.lua
index 8b32b2d..1e102d8 100644
--- a/src/brulijam/gps-tower.lua
+++ b/src/brulijam/gps-tower.lua
@@ -1,8 +1,17 @@
 -- https://tweaked.cc/guide/gps_setup.html
 -- Seems to not work with optifine
 
-local x = 0
-local y = 0
-local z = 0
+basic = require("lib.basic")
 
-shell.run("gps", "host", x, y, z)
\ No newline at end of file
+if fs.exists "/brulijam/config/gps.config" then
+  gpsConfig = basic.readFileAll("/brulijam/config/gps.config")
+  gpsConfig = textutils.unserialize(gpsConfig)
+else
+  gpsConfig = {}
+  gpsConfig["posX"] = 0
+  gpsConfig["posY"] = 0
+  gpsConfig["posZ"] = 0
+  basic.writeToFile("/brulijam/config/gps.config", textutils.serialize(gpsConfig))
+end
+
+shell.run("gps", "host", gpsConfig["posX"], gpsConfig["posY"], gpsConfig["posZ"])
\ No newline at end of file