diff --git a/oden-js/src/conversion/from.rs b/oden-js/src/conversion/from.rs
index 4d12e776..d7a6acb4 100644
--- a/oden-js/src/conversion/from.rs
+++ b/oden-js/src/conversion/from.rs
@@ -1,4 +1,4 @@
-use crate::{ContextRef, Error, Result, ValueRef};
+use crate::{ContextRef, Error, Result, Value, ValueRef};
 use std::num::TryFromIntError;
 
 pub trait TryFromValue: Sized {
@@ -98,10 +98,9 @@ impl TryFromValue for String {
     }
 }
 
-// impl<'c, T: Class> TryFrom<&'c ValueRef<'_>> for T {
-//
-//     #[inline]
-//     fn try_from_value(value: &ValueRef, ctx:&ContextRef) -> Result< Self> {
-//         T::from_value(value)
-//     }
-// }
+impl TryFromValue for Value {
+    #[inline]
+    fn try_from_value(value: &ValueRef, ctx: &ContextRef) -> Result<Self> {
+        Ok(value.dup(ctx))
+    }
+}