Add output to each execution step

benches/src/test_data.rs

@@ -89,6 +89,6 @@ pub fn execute_with_history(source: &str, bars: &[Bar]) -> Result<(), pine::Erro
     let historical_data = BenchHistoricalData::new(bars.to_vec());
     historical_data.set_current_bar(bars.len() - 1);
     script.set_historical_provider(Box::new(historical_data));
-    script.execute(&bars[bars.len() - 1])?;
+    let _output = script.execute(&bars[bars.len() - 1])?;
     Ok(())
 }

crates/pine-builtin-macro/src/lib.rs

@@ -367,12 +367,61 @@ fn generate_value_conversion(
 ) -> proc_macro2::TokenStream {
     let type_str = quote! { #field_type }.to_string();
 
-    let conversion = if type_str.contains("f64") {
+    // Check if this is an Option type
+    let is_option = type_str.contains("Option");
+
+    let conversion = if is_option {
+        // For Option types, handle Na values
+        // Check for Color BEFORE other types since Value might also be in the type string
+        if type_str.contains("Color") && !type_str.contains("Value") {
+            quote! {
+                if matches!(arg_value, Value::Na) {
+                    None
+                } else {
+                    Some(arg_value.as_color()?)
+                }
+            }
+        } else if type_str.contains("f64") {
+            quote! {
+                if matches!(arg_value, Value::Na) {
+                    None
+                } else {
+                    Some(arg_value.as_number()?)
+                }
+            }
+        } else if type_str.contains("String") {
+            quote! {
+                if matches!(arg_value, Value::Na) {
+                    None
+                } else {
+                    Some(arg_value.as_string()?)
+                }
+            }
+        } else if type_str.contains("bool") {
+            quote! {
+                if matches!(arg_value, Value::Na) {
+                    None
+                } else {
+                    Some(arg_value.as_bool()?)
+                }
+            }
+        } else {
+            quote! {
+                if matches!(arg_value, Value::Na) {
+                    None
+                } else {
+                    Some(arg_value)
+                }
+            }
+        }
+    } else if type_str.contains("f64") {
         quote! { arg_value.as_number()? }
     } else if type_str.contains("String") {
         quote! { arg_value.as_string()? }
     } else if type_str.contains("bool") {
         quote! { arg_value.as_bool()? }
+    } else if type_str.contains("Color") {
+        quote! { arg_value.as_color()? }
     } else if type_str.contains("Value") {
         quote! { arg_value }
     } else {