diff --git a/report_qweb_parameter/README.rst b/report_qweb_parameter/README.rst
index d6b00838b9..c8277605ec 100644
--- a/report_qweb_parameter/README.rst
+++ b/report_qweb_parameter/README.rst
@@ -72,13 +72,17 @@ Authors
 Contributors
 ------------
 
--  Enric Tobella <etobella@creublanca.es>
+- Enric Tobella <etobella@creublanca.es>
 
--  `Tecnativa <https://www.tecnativa.com>`__:
+- `Tecnativa <https://www.tecnativa.com>`__:
 
-      -  Carlos Roca
+     - Carlos Roca
 
--  Iván Antón <ozono@ozonomultimedia.com>
+- Iván Antón <ozono@ozonomultimedia.com>
+
+- `Sygel Technology <https://www.sygel.es>`__:
+
+     - Valentin Vinagre
 
 Maintainers
 -----------
diff --git a/report_qweb_parameter/demo/test_report_field_length.xml b/report_qweb_parameter/demo/test_report_field_length.xml
index 774f426ccc..29135c2971 100644
--- a/report_qweb_parameter/demo/test_report_field_length.xml
+++ b/report_qweb_parameter/demo/test_report_field_length.xml
@@ -15,6 +15,11 @@
                 t-esc="docs[0].street"
                 t-if="docs[0].street"
             />
+            <li
+                name="esc_conditional_length"
+                t-length="3"
+                t-esc="docs[0].name or docs[0].company_registry"
+            />
             <li
                 name="esc_maxlength"
                 t-maxlength="10"
@@ -28,6 +33,11 @@
                 t-out="docs[0].vat"
                 t-if="docs[0].vat"
             />
+            <li
+                name="raw_conditional_length"
+                t-length="4"
+                t-raw="docs[0].name or docs[0].company_registry"
+            />
             <li
                 name="raw_maxlength"
                 t-maxlength="10"
@@ -35,14 +45,19 @@
                 t-if="docs[0].company_registry"
             />
             <li
-                name="raw_length"
+                name="out_length"
                 t-minlength="10"
                 t-length="10"
                 t-out="docs[0].vat"
                 t-if="docs[0].vat"
             />
             <li
-                name="raw_maxlength"
+                name="out_conditional_length"
+                t-length="5"
+                t-out="docs[0].name or docs[0].company_registry"
+            />
+            <li
+                name="out_maxlength"
                 t-maxlength="10"
                 t-out="docs[0].company_registry"
                 t-if="docs[0].company_registry"
diff --git a/report_qweb_parameter/models/ir_qweb.py b/report_qweb_parameter/models/ir_qweb.py
index b763d3183d..f5536785a9 100644
--- a/report_qweb_parameter/models/ir_qweb.py
+++ b/report_qweb_parameter/models/ir_qweb.py
@@ -49,7 +49,7 @@ def _compile_directive_out(self, el, compile_context, level):
             )
         if "t-length" in el.attrib:
             tlength = el.attrib.pop("t-length")
-            el.attrib["t-out"] = el.attrib["t-out"] + "[:" + tlength + "]"
+            el.attrib["t-out"] = "(" + el.attrib["t-out"] + ")[:" + tlength + "]"
         return super()._compile_directive_out(el, compile_context, level)
 
     def _compile_directive_raw(self, el, compile_context, level):
@@ -68,5 +68,5 @@ def _compile_directive_raw(self, el, compile_context, level):
             )
         if "t-length" in el.attrib:
             tlength = el.attrib.pop("t-length")
-            el.attrib["t-raw"] = el.attrib["t-raw"] + "[:" + tlength + "]"
+            el.attrib["t-raw"] = "(" + el.attrib["t-raw"] + ")[:" + tlength + "]"
         return super()._compile_directive_raw(el, compile_context, level)
diff --git a/report_qweb_parameter/readme/CONTRIBUTORS.md b/report_qweb_parameter/readme/CONTRIBUTORS.md
index 98599aa293..1d7b025dd6 100644
--- a/report_qweb_parameter/readme/CONTRIBUTORS.md
+++ b/report_qweb_parameter/readme/CONTRIBUTORS.md
@@ -5,3 +5,7 @@
   > - Carlos Roca
 
 - Iván Antón \<<ozono@ozonomultimedia.com>\>
+
+- [Sygel Technology](https://www.sygel.es):
+
+  > - Valentin Vinagre
diff --git a/report_qweb_parameter/static/description/index.html b/report_qweb_parameter/static/description/index.html
index f9b095124d..50b285b11f 100644
--- a/report_qweb_parameter/static/description/index.html
+++ b/report_qweb_parameter/static/description/index.html
@@ -431,6 +431,13 @@ <h2><a class="toc-backref" href="#toc-entry-5">Contributors</a></h2>
 </li>
 <li><p class="first">Iván Antón &lt;<a class="reference external" href="mailto:ozono&#64;ozonomultimedia.com">ozono&#64;ozonomultimedia.com</a>&gt;</p>
 </li>
+<li><p class="first"><a class="reference external" href="https://www.sygel.es">Sygel Technology</a>:</p>
+<blockquote>
+<ul class="simple">
+<li>Valentin Vinagre</li>
+</ul>
+</blockquote>
+</li>
 </ul>
 </div>
 <div class="section" id="maintainers">
diff --git a/report_qweb_parameter/tests/test_report_qweb_parameter.py b/report_qweb_parameter/tests/test_report_qweb_parameter.py
index 19dd76c8ac..7468252006 100644
--- a/report_qweb_parameter/tests/test_report_qweb_parameter.py
+++ b/report_qweb_parameter/tests/test_report_qweb_parameter.py
@@ -24,9 +24,18 @@ def test_qweb_parameter(self):
         docs.website = "1234567890"  # for avoding that Odoo adds http://
         rep = report_object._render(report_name, docs.ids, False)
         root = ET.fromstring(rep[0])
+
+        # test length
         self.assertEqual(root[0].text, "1234567890")
-        self.assertEqual(root[2].text, "1234567890")
-        self.assertEqual(root[4].text, "1234567890")
+        self.assertEqual(root[3].text, "1234567890")
+        self.assertEqual(root[6].text, "1234567890")
+
+        # test condicional length
+        self.assertEqual(root[1].text, "Tes")
+        self.assertEqual(root[4].text, "Test")
+        self.assertEqual(root[7].text, "Test ")
+
+        # test maxlength
         docs.update({"street": "123456789"})
         with self.assertRaises(QWebException):
             report_object._render(report_name, docs.ids, False)