diff --git a/snippets/shx-3d-render-input.liquid b/snippets/shx-3d-render-input.liquid
index 9330c75..8b2f1fe 100644
--- a/snippets/shx-3d-render-input.liquid
+++ b/snippets/shx-3d-render-input.liquid
@@ -482,7 +482,7 @@
 
             // the the last - and get the id
             let inputID = target.id.slice(0, target.id.lastIndexOf('-'));
-            let filamentID = target.id.slice(inputID.lastIndexOf('-') + 1);
+            let filamentID = target.id.slice(target.id.lastIndexOf('-') + 1);
 
             console.log("input.id", target.id, "inputID", inputID, "filamentID", filamentID);