diff --git a/js/ctx.js b/js/ctx.js
index 8cb9a72..1791a69 100644
--- a/js/ctx.js
+++ b/js/ctx.js
@@ -17,11 +17,12 @@ export class context{
         f32: { size: 4,type: 2, content: false },
         f64: { size: 8,type: 2, content: false },
         char: {link:"u8"},
+        c: {link:"u8"},
         bool: {link:"u8"},
         b: {link:"bool"},
     };
     #upper = [];
-    constructor(upper =[]){
+    constructor(upper = null){
         this.#upper = upper;
     }
     nextLevel(){
@@ -34,8 +35,8 @@ export class context{
     find(name, vType,pos=name.pos,quit=true){
         let elem = (this.#list[vType]??{})[name+""]??null;
 
-        if(!elem){
-            elem = this.#upper.find(name,vType,pos,false);
+        if (!elem && this.#upper){
+            elem = this.#upper.find(name+"",vType,pos,false);
         }
         if(!elem&&quit) error("Can not find '"+name+"' in context!",...pos);
         return elem;
@@ -43,10 +44,10 @@ export class context{
 
     getType(name,pos=name.pos, quit = true){
         let lastName = name;
-        let type = this.#types[name];
+        let type = this.#types[name+""];
         
         if(!type){
-            type = this.#upper.getType(name, pos, false);
+            if(this.#upper) type = this.#upper.getType(name+"", pos, false);
             if (!type) error("Can not find '" + name + "' in context", ...pos);
             return type;
         }else{