diff --git a/.drone.yml b/.drone.yml
index 4e1cef4..a521535 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -8,8 +8,8 @@ steps:
   commands:
     - echo 'Starting build pipeline for RadarrSharp'
     - echo ${DRONE_BUILD_NUMBER}
-    - echo "$((1+2))"
-    - echo $((3+4))
+    - echo "$((${DRONE_BUILD_NUMBER}-15))"
+    - echo $((3+4-20))
 
 - name: test
   image: mcr.microsoft.com/dotnet/sdk:5.0