diff --git a/class.TplBlock.php b/class.TplBlock.php
index 8de600e..ac9a72e 100644
--- a/class.TplBlock.php
+++ b/class.TplBlock.php
@@ -65,12 +65,15 @@ class TplBlock {
     $this->subBlocs[$bloc->name][] = $bloc;
   }
 
-  private function subBlockRegex($prefix, $blocName) {
+  private function subBlockRegex($prefix, $blocName,$trim = true) {
+      echo "t".$trim;
     return '/'
          . self::blockStartStart
          . preg_quote($prefix . $blocName)
          . self::blockStartEnd
+         . (($trim === false)? '' : '(?:\R|)?' )
          . '(.*?)'
+         . (($trim === false)?  '' : '(?:\R|)?' )
          . self::blockEndStart
          . preg_quote($prefix . $blocName)
          . self::blockEndEnd
@@ -78,7 +81,8 @@ class TplBlock {
   }
 
   /*
-  * Shake template and input vars and returns the text
+  * Shake the template string and input vars 
+  * Then returns the parsed text
   * Input: 
   *   $str String containing the template to parse
   *   $subBlocsPath String optional, for this class internal use. The path like "bloc.subbloc"
@@ -100,7 +104,7 @@ class TplBlock {
     //parse blocs
     foreach($this->subBlocs as $blocName => $blocsArr){
       $str = preg_replace_callback(
-        $this->subBlockRegex($prefix, $blocName),
+        $this->subBlockRegex($prefix, $blocName, $trim),
         function($m) use($blocName,$blocsArr,$prefix, $trim) {
           $out = "";
           foreach($blocsArr as $bloc){
@@ -115,12 +119,8 @@ class TplBlock {
 
     // Delete unused blocs
     $str = preg_replace($this->unusedRegex, "", $str);
-
-    if($trim){
-      return trim($str,"\n");
-    }else{
-      return $str;
-    }
+    return $str;
+    
   }
 
   /*
diff --git a/sample/sample.php b/sample/sample.php
index fc06316..1ecb79c 100644
--- a/sample/sample.php
+++ b/sample/sample.php
@@ -44,4 +44,4 @@ for ($i = 2; $i < 121; $i++){
 
 
 
-echo $tpl->apply_tpl_file("tpl.txt",true);
\ No newline at end of file
+echo $tpl->apply_tpl_file("tpl.txt");
\ No newline at end of file
diff --git a/test-TplBlock/sample.txt b/test-TplBlock/sample.txt
new file mode 100644
index 0000000..a6346a1
--- /dev/null
+++ b/test-TplBlock/sample.txt
@@ -0,0 +1,15 @@
+hello {{title}} {{name}} {{firstname}}
+
+The first primes numbers are:
+<!-- BEGIN primes -->
+  - {{primes.number}}
+<!-- END primes -->
+
+Lets list all divisors of:
+
+<!-- BEGIN number -->
+{{number.value}} Have those divisors:
+  <!-- BEGIN number.divisor -->
+  - {{number.divisor.value}}
+  <!-- END number.divisor -->
+<!-- END number -->
\ No newline at end of file
diff --git a/test-TplBlock/test.php b/test-TplBlock/test.php
new file mode 100644
index 0000000..5ed5be2
--- /dev/null
+++ b/test-TplBlock/test.php
@@ -0,0 +1,47 @@
+<?php
+
+include("../class.TplBlock.php");
+
+$tpl = new TplBlock();
+
+//simples vars
+
+$tpl->add_vars(array(
+    "name" => "Gnieark",
+    "title" => "Monsieur",
+    "firstname" => "Grouik"
+    )
+  );
+
+$primes = array(1,2,3,5,7,11);
+
+// a sub bloc
+foreach($primes as $prime){
+  $tplPrime = new TplBlock('primes');
+  $tplPrime->add_vars(array('number'  => $prime));
+  $tpl->add_sub_block($tplPrime);
+}
+
+// test sub - sub blocs
+for ($i = 2; $i < 121; $i++){
+    
+    $tplNumber = new TplBlock('number');
+    $tplNumber->add_vars( array("value" => $i));
+    $index = 1;
+    $number = $i;
+    while ( $number > 1 && $index < count($primes)){
+        if($number % $primes[$index] == 0){
+            $number = $number / $primes[$index];
+            $tplDivisor = new TplBlock("divisor");
+            $tplDivisor->add_vars( array("value" => $primes[$index]));
+            $tplNumber->add_sub_block($tplDivisor);
+        }else{
+            $index++;
+        }
+    }
+    $tpl->add_sub_block($tplNumber);
+}
+
+
+
+echo $tpl->apply_tpl_file("sample.txt",false);
\ No newline at end of file