diff --git a/step.yml b/step.yml
index 533c0b6..afea5d7 100644
--- a/step.yml
+++ b/step.yml
@@ -39,7 +39,7 @@ inputs:
         Xamarin project configuration
       is_required: true
       is_expand: true
-  - xamarin_platform: iPhoneSimulator
+  - xamarin_platform: AnyCPU
     opts:
       title: Xamarin platform
       description: |
@@ -55,7 +55,7 @@ inputs:
       is_required: true
       is_expand: true
       is_dont_change_value: false
-  - emulator_serial:
+  - emulator_serial: $BITRISE_EMULATOR_SERIAL
     opts:
       title: "Emulator serial to boot"
       description: |