diff --git a/src/cst/expression.rs b/src/cst/expression.rs
index f7b23e5..a1bb78b 100644
--- a/src/cst/expression.rs
+++ b/src/cst/expression.rs
@@ -45,8 +45,7 @@ impl Expression {
     }
 
     fn gen_reference_call(json: &JsonValue) -> (String, Option<(usize, usize)>) {
-        let json_symbol_identifier = Tools::match_tags(
-            vec![json],
+        let json_symbol_identifier_path = [
             vec![
                 Tag::REFERENCE_CALL_BASE,
                 Tag::REFERENCE,
@@ -54,8 +53,23 @@ impl Expression {
                 Tag::UNQUALIFIED_ID,
                 Tag::SYMBOL_IDENTIFIER,
             ],
-        );
-        assert_eq!(json_symbol_identifier.len(), 1,);
+            vec![
+                Tag::REFERENCE_CALL_BASE,
+                Tag::REFERENCE,
+                Tag::LOCAL_ROOT,
+                Tag::UNQUALIFIED_ID,
+                Tag::ESCAPEDIDENTIFIER,
+            ],
+        ];
+
+        let json_symbol_identifier = {
+        let json_symbol_identifiers: Vec<_> = json_symbol_identifier_path
+                            .iter()
+                            .flat_map(|x|Tools::match_tags(vec![json], x.to_vec()))
+                            .collect();
+        //assert_eq!(json_symbol_identifier.len(), 1,);
+        json_symbol_identifiers[0]
+        };
 
         let json_scalar = Tools::match_tags(
             vec![json],