diff --git a/conversions/setdrift.js b/conversions/setdrift.js
new file mode 100644
index 0000000..f2ed23d
--- /dev/null
+++ b/conversions/setdrift.js
@@ -0,0 +1,53 @@
+
+module.exports = (app, plugin) => {
+  return {
+    title: 'Set/Drift (129291)',
+    optionKey: 'SetDrift',
+    keys: ["environment.current.setTrue", "environment.current.drift"],
+    callback: (set, drift) => {
+      try {
+        return [
+          {
+            pgn: 129291,
+            'Set': set,
+            'Drift': drift,
+            'Set Reference': 0
+          }
+        ]
+      } catch ( err ) {
+        console.error(err)
+      }
+    },
+
+    tests: [{
+      input: [ 2.0944, 1.2 ],
+      expected: [
+        {
+          pgn: 129291,
+          dst: 255,
+          prio: 2,
+          fields: {
+            'Drift': 1.2,
+            'Set': 2.0944,
+            'Set Reference': "True"
+          }
+        }
+      ]
+    },{
+      input: [ 1.0944, 1.5 ],
+      expected: [
+        {
+          pgn: 129291,
+          dst: 255,
+          prio: 2,
+          fields: {
+            'Drift': 1.5,
+            'Set': 1.0944,
+            'Set Reference': "True"
+          }
+        }
+      ]
+    }]
+  }
+}
+