diff --git a/startup.lua b/startup.lua
index 0fb027b..73373c5 100644
--- a/startup.lua
+++ b/startup.lua
@@ -125,9 +125,9 @@ if transceiver == nil then
 else
     -- Configure transceiver IDC to match iris password (if GDO enabled)
     if config.enableGDO and config.irisPassword then
-        local idcCode = tonumber(config.irisPassword)
+        local idcCode = config.irisPassword
         if idcCode then
-            transceiver.setIDC(idcCode)
+            transceiver.setCurrentCode(idcCode)
             utils.log("Transceiver IDC configured to: " .. idcCode)
         else
             print("WARNING: irisPassword must be a number for GDO support")