diff --git a/Evaluator/BuiltIn.go b/Evaluator/BuiltIn.go
index c5aa0fe..ef93ef1 100644
--- a/Evaluator/BuiltIn.go
+++ b/Evaluator/BuiltIn.go
@@ -158,29 +158,8 @@ func ImportLibrary(env *Environment) (iObject, error) {
 	}
 	pathLibraryOb.Value = strings.Replace(pathLibraryOb.Value, "/", string(os.PathSeparator), -1)
 	path := filepath.Join(localPath, pathLibraryOb.Value)
-	println(path)
 	_, e = Run(path, env)
-	if e != nil {
-		return nil, e
-	}
-	if len(env.variables) > 1 {
-		for name, f := range env.variables {
-			if name == "path" {
-				continue
-			}
-			if _, ok := f.(Parser.FuncDeclarationStatement); !ok {
-				return nil, errors.New("not possible define variables in library")
-			}
-		}
-	}
-	partsPath := strings.Split(pathLibraryOb.Value, string(os.PathSeparator))
-	pathLibraryOb.Value = partsPath[len(partsPath)-1]
-	var newName string
-	for name, funct := range env.functions {
-		newName = pathLibraryOb.Value[:len(pathLibraryOb.Value)-4] + "_" + name
-		env.externals.addFunction(newName, funct)
-	}
-	return nil, nil
+	return libraryObject{name: pathLibraryOb.Value, env: env}, e
 }
 func LoadBuiltInFunction(env *Environment) {
 	env.addBuiltInFunc("len", builtInFuncObject{Name: "len", NameParams: []string{"a"}, BuiltInfunc: lenBuiltin})
diff --git a/Evaluator/CallFunc.go b/Evaluator/CallFunc.go
index aa6ad91..9e09fa9 100644
--- a/Evaluator/CallFunc.go
+++ b/Evaluator/CallFunc.go
@@ -3,6 +3,7 @@ package Evaluator
 import (
 	"FLanguage/Parser"
 	"errors"
+	"strings"
 )
 
 func evalCallFunc(expression Parser.ExpresionCallFunc, env *Environment) (iObject, error) {
@@ -34,22 +35,26 @@ func evalCallFunc(expression Parser.ExpresionCallFunc, env *Environment) (iObjec
 			fun = inlineFun
 		}
 	default:
-		funct, e := evalExpresion(expression.Identifier, env)
-		if e != nil {
-
-			return nil, e
-		}
 		hashGet, ok := expression.Identifier.(Parser.ExpresionGetValueHash)
 		if ok {
 			hash, e := evalExpresion(hashGet.Value, env)
 			if e != nil {
 				return nil, e
 			}
+			if lib, ok := hash.(libraryObject); ok {
+				envFunc.functions = lib.env.functions
+				fun, e = lib.env.getFunction(strings.Split(hashGet.Index.ToString(), `"`)[1])
+			}
 			envFunc.addVariable("this", hash)
 		}
+		funct, e := evalExpresion(expression.Identifier, env)
+		if e != nil {
+			return nil, e
+		}
+		tfun := fun
 		fun, ok = funct.(Parser.FuncDeclarationStatement)
 		if !ok {
-			return nil, errors.New("not a function")
+			fun = tfun
 		}
 	}
 	if len(fun.Params) != len(expression.Values) {
diff --git a/Evaluator/Expresion.go b/Evaluator/Expresion.go
index a2981d8..d0b9e40 100644
--- a/Evaluator/Expresion.go
+++ b/Evaluator/Expresion.go
@@ -111,7 +111,11 @@ func evalExpresion(expresion Parser.IExpresion, env *Environment) (iObject, erro
 		if e != nil {
 			return nil, e
 		}
+		if b, ok := hash.(libraryObject); ok {
+			return b, nil
+		}
 		hash, ok := hash.(hashObject).Values[key]
+
 		if !ok {
 			return nil, errors.New("element not found")
 		}
diff --git a/Evaluator/StandardLibrary_test.go b/Evaluator/StandardLibrary_test.go
index 1ff3e41..994c35a 100644
--- a/Evaluator/StandardLibrary_test.go
+++ b/Evaluator/StandardLibrary_test.go
@@ -9,9 +9,9 @@ import (
 
 func TestBinarySearch(t *testing.T) {
 	ist := `
-	import("../Library/BinarySearch.txt");
+	let binary=import("../Library/BinarySearch.txt");
 	let list=[2,6,7,9,22,44,55,66,77,88,99];
-	let b=BinarySearch_Run(list,66);
+	let b=binary{"Run"}(list,66);
 	END
 	`
 	lexer, e := Lexer.New([]byte(ist))
@@ -46,10 +46,10 @@ func TestBinarySearch(t *testing.T) {
 
 func TestTree(t *testing.T) {
 	ist := `
-	import("../Library/Tree.txt");
+	let tree=import("../Library/Tree.txt");
 	let list=[22,21,6,7,9,0,55,6,-20,88,99];
-	let node=Tree_MakeTree(list);
-	let orderedList=Tree_FromTreeToList(node,len(list));
+	let node=tree{"MakeTree"}(list);
+	let orderedList=tree{"FromTreeToList"}(node,len(list));
 	END
 	`
 	lexer, e := Lexer.New([]byte(ist))
diff --git a/Evaluator/StructObject.go b/Evaluator/StructObject.go
index b54c49b..d40a447 100644
--- a/Evaluator/StructObject.go
+++ b/Evaluator/StructObject.go
@@ -107,3 +107,12 @@ func (b builtInFuncObject) ToString() string {
 	}
 	return r + ")"
 }
+
+type libraryObject struct {
+	name string
+	env  *Environment
+}
+
+func (l libraryObject) ToString() string {
+	return "Env" + l.name
+}
diff --git a/Library/Tree.txt b/Library/Tree.txt
index 92885e8..ef5b682 100644
--- a/Library/Tree.txt
+++ b/Library/Tree.txt
@@ -3,9 +3,9 @@ Ff AddNode(value,node){
 		ret [[],value,[]];
 	}
 	if(value>node[1]){
-		node[2]=Tree_AddNode(value,node[2]);
+		node[2]=AddNode(value,node[2]);
 	}else{
-		node[0]=Tree_AddNode(value,node[0]);
+		node[0]=AddNode(value,node[0]);
 	}
 	ret node;
 }
@@ -13,10 +13,10 @@ Ff AddNode(value,node){
 Ff MakeTree(list){
 	let i=1;
 	let node=[[],list[0],[]];
-	let ordered=newArray(len(list),0);
+	let ordered=newArray(len(list),0); 
 	let v=0;
 	while(i<len(list)){
-		Tree_AddNode(list[i],node);
+		AddNode(list[i],node);
 		ordered[i]=v;
 		i=i+1;
 	}
@@ -25,20 +25,19 @@ Ff MakeTree(list){
 Ff interateTreeNodes(node,i,list){
 
 	if(len(node[0])!=0){
-		Tree_interateTreeNodes(node[0],i,list);
+		interateTreeNodes(node[0],i,list);
 	}
 	list[i[0]]=node[1];
 	i[0]=i[0]+1;
 
 	if(len(node[2])!=0){
-		Tree_interateTreeNodes(node[2],i,list);
+		interateTreeNodes(node[2],i,list);
 	}
 }
 Ff FromTreeToList(node,n){
-
 	let i=[0];
 	let list=newArray(n,0);
-	Tree_interateTreeNodes(node,i,list);
+	interateTreeNodes(node,i,list);
 	ret list;
 }
 END