diff --git a/theatre/studio/src/panels/DetailPanel/DetailPanel.tsx b/theatre/studio/src/panels/DetailPanel/DetailPanel.tsx
index 6f2979a..6953281 100644
--- a/theatre/studio/src/panels/DetailPanel/DetailPanel.tsx
+++ b/theatre/studio/src/panels/DetailPanel/DetailPanel.tsx
@@ -125,6 +125,15 @@ const DetailPanel: React.FC<{}> = (props) => {
     const obj = selection.find(isSheetObject)
 
     if (obj) {
+      const event = new CustomEvent('panelEvent', {
+        bubbles: false,
+        detail: {
+          panelID: obj.address.objectKey,
+          action: 'opened',
+        },
+      })
+      window.dispatchEvent(event)
+
       return (
         <Container
           data-testid="DetailPanel-Object"