diff --git a/valuescript_vm/src/operations.rs b/valuescript_vm/src/operations.rs
index b1765d9..2dffd6f 100644
--- a/valuescript_vm/src/operations.rs
+++ b/valuescript_vm/src/operations.rs
@@ -67,7 +67,7 @@ pub fn op_plus(left: &Val, right: &Val) -> Result<Val, Val> {
 }
 
 pub fn op_unary_plus(input: &Val) -> Result<Val, Val> {
-  if let Some(res) = input.override_unary_op(UnaryOp::Plus) {
+  if let Some(res) = input.override_unary_op(UnaryOp::Plus, input) {
     return res;
   }
 
@@ -90,7 +90,7 @@ pub fn op_minus(left: &Val, right: &Val) -> Result<Val, Val> {
 }
 
 pub fn op_unary_minus(input: &Val) -> Result<Val, Val> {
-  if let Some(res) = input.override_unary_op(UnaryOp::Minus) {
+  if let Some(res) = input.override_unary_op(UnaryOp::Minus, input) {
     return res;
   }
 
@@ -450,7 +450,7 @@ pub fn op_or(left: &Val, right: &Val) -> Result<Val, Val> {
 }
 
 pub fn op_not(input: &Val) -> Result<Val, Val> {
-  if let Some(res) = input.override_unary_op(UnaryOp::Not) {
+  if let Some(res) = input.override_unary_op(UnaryOp::Not, input) {
     return res;
   }
 
@@ -592,7 +592,7 @@ pub fn op_bit_or(left: &Val, right: &Val) -> Result<Val, Val> {
 }
 
 pub fn op_bit_not(input: &Val) -> Result<Val, Val> {
-  if let Some(res) = input.override_unary_op(UnaryOp::BitNot) {
+  if let Some(res) = input.override_unary_op(UnaryOp::BitNot, input) {
     return res;
   }
 
diff --git a/valuescript_vm/src/vs_value.rs b/valuescript_vm/src/vs_value.rs
index 9f17f70..1c6993a 100644
--- a/valuescript_vm/src/vs_value.rs
+++ b/valuescript_vm/src/vs_value.rs
@@ -111,7 +111,7 @@ pub trait ValTrait: fmt::Display {
     None
   }
 
-  fn override_unary_op(&self, _op: UnaryOp) -> Option<Result<Val, Val>> {
+  fn override_unary_op(&self, _op: UnaryOp, _input: &Val) -> Option<Result<Val, Val>> {
     None
   }
 
@@ -595,7 +595,7 @@ impl ValTrait for Val {
     }
   }
 
-  fn override_unary_op(&self, op: UnaryOp) -> Option<Result<Val, Val>> {
+  fn override_unary_op(&self, op: UnaryOp, input: &Val) -> Option<Result<Val, Val>> {
     match self {
       Val::Void
       | Val::Undefined
@@ -611,8 +611,8 @@ impl ValTrait for Val {
       | Val::Class(_)
       | Val::CopyCounter(_)
       | Val::StoragePtr(_) => None,
-      Val::Static(static_) => static_.override_unary_op(op),
-      Val::Dynamic(dynamic) => dynamic.override_unary_op(op),
+      Val::Static(static_) => static_.override_unary_op(op, input),
+      Val::Dynamic(dynamic) => dynamic.override_unary_op(op, input),
     }
   }