diff --git a/examples/example.il b/examples/example.il
index 48caa45..e49a736 100644
--- a/examples/example.il
+++ b/examples/example.il
@@ -2,10 +2,11 @@ example = nil
 example2 = example
 
 ; func2(g_arg1 g_arg2 ?g_args1 1 ?g_argw 2) => nil
-(procedure func2(arg1 arg2 @key (args 1) (argw 2) "gggg")
+(procedure func2(arg1 arg2 @key (args 1) (argw 2) "ggng")
   ; some stuff to do
   a = some_obj->field1
   some_obj->field2 = 2
+  args = 2
 )
 
 (
diff --git a/skillls/main.py b/skillls/main.py
index bc0ee3d..39da720 100644
--- a/skillls/main.py
+++ b/skillls/main.py
@@ -1,5 +1,6 @@
 from collections.abc import Generator
 from dataclasses import dataclass, field
+from itertools import chain
 from logging import INFO, basicConfig, debug, error, getLogger, info, warning
 from re import findall, finditer, fullmatch, match as rematch
 from time import time
@@ -35,6 +36,7 @@ from lsprotocol.types import (
 from pygls.server import LanguageServer
 from pygls.workspace import TextDocument
 
+from skillls.builtins.common import SkillDataType
 from skillls.parsing.iterative import IterativeParser, TokenParser
 
 from .cache import Cache
@@ -203,9 +205,9 @@ class SkillLanguageServer(LanguageServer):
                 )
 
                 if any(
-                    in_range(token_range.start, let.range)
-                    and (token in (child.name for child in (let.children or [])))
-                    for let in self.lets
+                    in_range(token_range.start, ns.range)
+                    and (token in (child.name for child in (ns.children or [])))
+                    for ns in chain(self.lets, self.procs)
                 ):
                     pass
                 else:
@@ -309,11 +311,13 @@ class SkillLanguageServer(LanguageServer):
                 kwargs: list[DocumentSymbol] = []
                 rest: list[DocumentSymbol] = []
                 params_start = found.end() - len(found.group(4))
+                warning(found.group(4))
 
                 for part in finditer(
-                    r"(@(option|key)(\s\(\w+\s+.+\))+|@rest \w+|(\w+\s*))",
+                    rf"(@(option|key)(\s\(\w+\s+.+\))+|@rest \w+|\"[{''.join(dt.value for dt in SkillDataType)}]+\"|(\w+\s*))",
                     found.group(4),
                 ):
+                    info(part.group(1))
                     if part.group(1).startswith("@rest"):
                         rest_var_name = part.group(1).split()[1]
                         rest_var_range = Range(
@@ -362,6 +366,31 @@ class SkillLanguageServer(LanguageServer):
                                     ),
                                 )
                             )
+                    elif fullmatch(
+                        rf'"[{"".join(dt.value for dt in SkillDataType)}]+"',
+                        part.group(1),
+                    ):
+                        if not (
+                            len(args) + len(kwargs) + len(rest)
+                            == len(part.group(1)) - 2
+                        ):
+                            self.publish_diagnostics(
+                                uri,
+                                [
+                                    Diagnostic(
+                                        Range(start, Position(row, len(line))),
+                                        "type info length mismatches number of arguments",
+                                        severity=DiagnosticSeverity.Error,
+                                    )
+                                ],
+                            )
+                            return
+                        for char, arg in zip(
+                            part.group(1)[1:-1], chain(args, rest, kwargs)
+                        ):
+                            typ = SkillDataType(char)
+                            arg.detail = f"{typ.value}_"
+                        break
                     else:
                         for arg in finditer(r"(\w+)", part.group(1)):
                             arg_range = Range(
@@ -406,6 +435,9 @@ class SkillLanguageServer(LanguageServer):
                 for child in proc.children:
                     yield InlayHint(child.selection_range.end, "|l")
 
+                    if child.detail:
+                        yield InlayHint(child.selection_range.start, child.detail)
+
     def _hint_globals(self) -> Generator[InlayHint, None, None]:
         for glbl in self.globals:
             yield InlayHint(glbl.selection_range.end, "|g")