diff --git a/web/backend/app/services/altium_parser.py b/web/backend/app/services/altium_parser.py
index 27af848..80dace2 100644
--- a/web/backend/app/services/altium_parser.py
+++ b/web/backend/app/services/altium_parser.py
@@ -446,17 +446,11 @@ class AltiumParser:
 
 
 def make_complex_string(text: str, props: list[ComponentProperty]) -> str:
-    text = sanitize_text(text)
-    if not text.startswith("="):
-        return text
-    expr = text[1:]
+    from app.services.designators import resolve_expression
+
     mapping = {p.name: p.text for p in props}
-
-    def repl(m: re.Match) -> str:
-        key = m.group(1)
-        return mapping.get(key, "")
-
-    return sanitize_text(re.sub(r"['\"]([^'\"]+)['\"]", repl, expr))
+    designator = mapping.get("Designator", "")
+    return sanitize_text(resolve_expression(text, mapping, designator))
 
 
 def find_prjpcb(extract_dir: Path) -> Optional[Path]:
diff --git a/web/backend/app/services/designators.py b/web/backend/app/services/designators.py
index cca40ff..47b8d4c 100644
--- a/web/backend/app/services/designators.py
+++ b/web/backend/app/services/designators.py
@@ -146,33 +146,67 @@ def split_long_text(text: str, max_length: int) -> list[str]:
     return parts or [""]
 
 
-def resolve_expression(value: str, props: dict[str, str]) -> str:
+def _split_expression_parts(expr: str) -> list[str]:
+    """Split Altium expression by + outside quotes."""
+    parts: list[str] = []
+    current: list[str] = []
+    in_double = False
+    in_single = False
+    for ch in expr:
+        if ch == '"' and not in_single:
+            in_double = not in_double
+            current.append(ch)
+        elif ch == "'" and not in_double:
+            in_single = not in_single
+            current.append(ch)
+        elif ch == "+" and not in_double and not in_single:
+            if current:
+                parts.append("".join(current).strip())
+            current = []
+        else:
+            current.append(ch)
+    if current:
+        parts.append("".join(current).strip())
+    return parts
+
+
+def _resolve_property(name: str, props: dict[str, str], designator: str = "") -> str:
+    if name == "Designator":
+        raw = designator or props.get("Designator", "")
+    else:
+        raw = props.get(name, "")
+    if not raw:
+        return ""
+    if raw.startswith("=") or (raw.startswith('"') and raw.endswith('"') and len(raw) > 1):
+        return resolve_expression(raw, props, designator)
+    return raw
+
+
+def resolve_expression(value: str, props: dict[str, str], designator: str = "") -> str:
+    """
+    Altium complex string: ='literal'+"Property"+Name
+    - single quotes = literal text
+    - double quotes = component property reference
+    - bare identifiers = property reference
+    """
+    if not value:
+        return ""
+    value = value.strip()
+    if value.startswith('"') and value.endswith('"') and not value.startswith('="'):
+        return _resolve_property(value[1:-1], props, designator)
     if not value.startswith("="):
         return value
-    expr = value[1:]
-    result = []
-    i = 0
-    while i < len(expr):
-        ch = expr[i]
-        if ch in "'\"":
-            quote = ch
-            i += 1
-            start = i
-            while i < len(expr) and expr[i] != quote:
-                i += 1
-            result.append(expr[start:i])
-            i += 1
-        elif ch == "+":
-            i += 1
-        elif ch.isspace():
-            i += 1
+
+    result: list[str] = []
+    for part in _split_expression_parts(value[1:]):
+        if not part:
+            continue
+        if part.startswith("'") and part.endswith("'") and len(part) >= 2:
+            result.append(part[1:-1])
+        elif part.startswith('"') and part.endswith('"') and len(part) >= 2:
+            result.append(_resolve_property(part[1:-1], props, designator))
+        elif part == "Designator":
+            result.append(designator or props.get("Designator", ""))
         else:
-            start = i
-            while i < len(expr) and expr[i] not in "+'\"":
-                i += 1
-            key = expr[start:i].strip()
-            val = props.get(key, "")
-            if val.startswith("="):
-                val = resolve_expression(val, props)
-            result.append(val)
+            result.append(_resolve_property(part, props, designator))
     return "".join(result)
diff --git a/web/backend/app/services/table_generators.py b/web/backend/app/services/table_generators.py
index eedbb5a..a6803dc 100644
--- a/web/backend/app/services/table_generators.py
+++ b/web/backend/app/services/table_generators.py
@@ -24,8 +24,12 @@ class ComponentView:
     is_fitted: bool = True
 
     def get(self, key: str, default: str = "") -> str:
+        if key == "Designator":
+            return self.designator or self.properties.get("Designator", default)
         raw = self.properties.get(key, default)
-        return resolve_expression(raw, self.properties) if raw else default
+        if not raw:
+            return default
+        return resolve_expression(raw, self.properties, self.designator)
 
 
 @dataclass