diff --git a/agi.c b/agi.c
index afa3344..a412a7f 100644
--- a/agi.c
+++ b/agi.c
@@ -187,7 +187,7 @@ int agi_verbose_all_param(s_agi_parameter *param){
 
 	while(param != NULL){
 		char str[300];
-		snprintf( str, 300, "VERBOSE \"DEBUG (%s: %s)\" \n", (param->key == NULL ? "NULL" : param->key), (param->value == NULL ? "NULL" : param->value ) );
+		snprintf( str, 300, "VERBOSE \"DEBUG (%s: %s)\" \n", (param->key == NULL ? " " : param->key), (param->value == NULL ? "NULL" : param->value ) );
 	
 		int n = 0;
 		agi_clear_response( agi_command(str) );
diff --git a/teste.c b/teste.c
index db08019..1204da0 100644
--- a/teste.c
+++ b/teste.c
@@ -5,10 +5,12 @@
 #include <string.h>
 #include <fcntl.h>
 
+int define_variable( char *variable, char *value );
+
 
 int main(int argc, char **argv){
 
-	fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);
+//	fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);
 
 	s_agi_parameter *param_agi = NULL;
 
@@ -16,6 +18,34 @@ int main(int argc, char **argv){
 
 	agi_verbose_all_param(param_agi);
 
+	define_variable( "utterance", "-1");
+	define_variable( "confidence", "-1");
+
+	return 0;
+}
+
+
+int define_variable( char *variable, char *value ){
+
+	char v[100];
+	snprintf(v, 100, "SET VARIABLE %s %s \n", variable, value);
+
+	s_agi_return *response = NULL;
+	response = agi_command(v);
+
+	if(response){
+		if(response->code != 200){
+			agi_command("VERBOSE \"erro para definir uma variavel dialplan\"\n");
+			exit(-1);
+		}
+	}
+	else{
+		agi_command("VERBOSE \"erro para definir uma variavel dialplan\"\n");
+		exit(-1);
+	}
+
+	agi_clear_response( response );
 
 	return 0;
-}
\ No newline at end of file
+}
+