diff --git a/src/logoparsing/Logo.g b/src/logoparsing/Logo.g
index 4297f24..61a019f 100644
--- a/src/logoparsing/Logo.g
+++ b/src/logoparsing/Logo.g
@@ -40,6 +40,7 @@ tokens {
 	COS = 'COS';
 	POUR = 'POUR';
 	FIN = 'FIN';
+	CHAINE;
 }
 @lexer::header {
 	package logoparsing;
@@ -113,6 +114,8 @@ atomBool:	VRAI
 	|	expr ((CMP_EGAL^|CMP_SUP^|CMP_INF^|CMP_SUP_EGAL^|CMP_INF_EGAL^) expr)?
 	|	'('! exprBool ')'!
 	;
+chaine	:	'"' ID -> ^(CHAINE ID)
+	;
 id_lecture
 	:	':'! a = ID { if (!vars.contains($a.getText())) {valide = false; Log.appendnl("La variable "+$a.getText()+" n'a pas ete declaree.");}}
 	;
@@ -120,7 +123,8 @@ id_ecriture returns [String s]
 	:	'"'! a = ID {$s = $a.getText();}
 	;
 procedure
-	:	POUR a = ID id_lecture* {procedures.add($a.getText());} liste_instructions FIN -> ^(POUR ID id_lecture* ^(BLOC liste_instructions))
+	:	POUR a = ID (':' b = ID {vars.add($b.getText());})* {procedures.add($a.getText());} liste_instructions FIN -> ^(POUR ID ID* ^(BLOC liste_instructions))
 	;
-exec	:	a = ID { if (!procedures.contains($a.getText())) {valide = false; Log.appendnl("La procedure "+$a.getText()+" n'a pas ete declaree.");}}
+exec	:	a = ID^ { if (!procedures.contains($a.getText())) {valide = false; Log.appendnl("La procedure "+$a.getText()+" n'a pas ete declaree.");}}
+		((expr | id_lecture | chaine))*
 	;
diff --git a/src/logoparsing/LogoTree.g b/src/logoparsing/LogoTree.g
index dd74e1f..9adcf06 100644
--- a/src/logoparsing/LogoTree.g
+++ b/src/logoparsing/LogoTree.g
@@ -13,8 +13,11 @@ options {
 @members {
 	Traceur traceur;
 	int level = 0;
+	int compteur;
+	String procedureName;
 	HashMap<String,String> globalVars = new HashMap<String,String>();
 	TreeMap<String,Integer> procedures = new TreeMap<String,Integer>();
+	TreeMap<String,VarProcedureStorer> procedureVars = new TreeMap<String,VarProcedureStorer>();
 	
 	public void initialize(java.awt.Graphics g) {
 		traceur = Traceur.getInstance();
@@ -53,6 +56,15 @@ scope {
 @init {
 	$bloc::var = new HashMap<String,String>();
 	level++;
+	
+	if (procedureName != null) {
+		VarProcedureStorer s = procedureVars.get(procedureName);
+		for (String varName : s.getVarNames()) {
+			$bloc::var.put(varName, s.getValue(varName));
+		}
+		
+		procedureName = null;
+	}
 }
 @after {
 	level--;
@@ -108,6 +120,9 @@ exprBool returns [boolean v]
 	|	VRAI {$v = true;}
 	|	FAUX {$v = false;}
 	;
+chaine returns [String s]
+	:	^(CHAINE a = ID) {s = $a.getText();}
+	;
 repete
 @init {
 	int mark_list = 0;
@@ -156,13 +171,22 @@ procedure
 @init {
 	int mark_list = 0;
 }
-  	:	^(POUR a = ID ID* {mark_list = input.mark();} . ) {procedures.put($a.getText(), mark_list);}
+  	:	^(POUR a = ID {procedureName = $a.getText(); procedureVars.put(procedureName, new VarProcedureStorer());} arg_dec* {mark_list = input.mark();} . ) {procedures.put($a.getText(), mark_list);}
+	;
+arg_dec	:	a = ID {procedureVars.get(procedureName).addVar($a.getText());}
 	;
-exec	:	a = ID
+exec
+@init {
+	compteur = 1;
+}
+	:	^(a = ID {procedureName = $a.getText();} arg_exec*)
 		{
 			int mark_list = procedures.get($a.getText());
 			push(mark_list);
 			bloc();
 			pop();
 		}
-	;
\ No newline at end of file
+	;
+arg_exec:	x = expr {procedureVars.get(procedureName).initVar(compteur++, String.valueOf($x.v));}
+	|	s = chaine {procedureVars.get(procedureName).initVar(compteur++, $s.s);}
+	;
diff --git a/src/logoparsing/VarProcedureStorer.java b/src/logoparsing/VarProcedureStorer.java
new file mode 100644
index 0000000..ad221c4
--- /dev/null
+++ b/src/logoparsing/VarProcedureStorer.java
@@ -0,0 +1,32 @@
+package logoparsing;
+
+import java.util.HashMap;
+
+class VarProcedureStorer {
+
+    private final HashMap<String,Integer> varNameMap = new HashMap<String,Integer>();
+    private final HashMap<Integer,String> indexMap = new HashMap<Integer,String>();
+    private int argCounter = 1;
+
+    public void addVar(String varName) {
+        String value = "---";
+        
+        varNameMap.put(varName, argCounter);
+        indexMap.put(argCounter, value);
+
+        argCounter++;
+    }
+
+    public void initVar(int index, String value) {
+        indexMap.put(index, value);
+    }
+
+    public String getValue(String name) {
+        int index = varNameMap.get(name);
+        return indexMap.get(index);
+    }
+
+    public Iterable<String> getVarNames() {
+        return varNameMap.keySet();
+    }
+}