diff --git a/module/actor-sheet.js b/module/actor-sheet.js
index f8836363..ae6a0d3b 100644
--- a/module/actor-sheet.js
+++ b/module/actor-sheet.js
@@ -459,7 +459,7 @@ export class RdDActorSheet extends ActorSheet {
       this.actor.setEthylisme(parseInt(event.target.value));
     });
     html.find('#stress-test').click((event) => {
-      this.actor.stressTest();
+      this.actor.transformerStress();
       this.render(true);
     });
     html.find('#moral-malheureux').click((event) => {
diff --git a/module/actor.js b/module/actor.js
index b7224b7f..1e3aaa73 100644
--- a/module/actor.js
+++ b/module/actor.js
@@ -321,7 +321,7 @@ export class RdDActor extends Actor {
     await this._recupererVie(message);
     await this.jetDeMoral('neutre');
     await this.chanceActuelleIncDec(1);
-    await this.transformerStress(message);
+    this.transformerStress();
     await this.retourSeuilDeReve(message);
     message.content = `A la fin Chateau Dormant, ${message.content}<br>Un nouveau jour se lève`;
     ChatMessage.create(message);
@@ -1417,69 +1417,72 @@ export class RdDActor extends Actor {
   }
 
   /* -------------------------------------------- */
-  async stressTest() {
-    const message = {
-      content: "",
-      whisper: ChatUtility.getWhisperRecipientsAndGMs(game.user.name)
-    };
-    await this.transformerStress(message);
-    ChatMessage.create(message);
-  }
-
-  /* -------------------------------------------- */
-  async transformerStress(message) {
-    let compteurs = duplicate(this.data.data.compteurs);
-    const stress = Misc.toInt(compteurs.stress.value);
-
+  async transformerStress() {
+    const stress = Misc.toInt(this.data.data.compteurs.stress.value);
     if (stress <= 0) {
-      return false;
+      return;
     }
-
-    let stressRoll = await this._stressRoll();
-    let convertis = Math.floor(stress * stressRoll.factor);
-    compteurs.stress.value = Math.max(stress - convertis - 1, 0);
-
-    let dissolution = Math.max(0, Misc.toInt(compteurs.dissolution.value));
-    let exaltation = Math.max(0, Misc.toInt(compteurs.exaltation.value));
+    
+    const stressRoll = await this._stressRoll(this.getReveActuel());
+    
+    const conversion = Math.floor(stress * stressRoll.factor / 100);
+    let dissolution =  Math.max(0, Misc.toInt(this.data.data.compteurs.dissolution.value));
+    let exaltation = Math.max(0, Misc.toInt(this.data.data.compteurs.exaltation.value));
     const annule = Math.min(dissolution, exaltation);
     dissolution -= annule;
     exaltation -= annule;
-    if (dissolution > 0) {
-      const perdus = Math.min(dissolution, convertis);
-      convertis -= perdus;
-      dissolution -= perdus;
-    }
-    compteurs.experience.value += convertis + exaltation;
-    compteurs.dissolution.value = dissolution;
+    const perteDissolution = Math.max(0, Math.min(dissolution, conversion));
+
+    let stressRollData = {
+      alias: this.name,
+      selectedCarac: this.data.data.carac.reve,
+      rolled: stressRoll,
+      stress: stress,
+      perte: Math.min(conversion, stress),
+      convertis: conversion - perteDissolution,
+      xp:  conversion - perteDissolution + exaltation,
+      dissolution: dissolution,
+      exaltation: exaltation
+    };
+
+    ChatMessage.create({
+      whisper: ChatUtility.getWhisperRecipientsAndGMs(game.user.name),
+      content: await renderTemplate(`systems/foundryvtt-reve-de-dragon/templates/chat-resultat-transformer-stress.html`, stressRollData)
+    });
+    
+    let compteurs = duplicate(this.data.data.compteurs);
+    compteurs.stress.value = Math.max(stress - stressRollData.perte - 1, 0);
+    compteurs.experience.value += stressRollData.xp;
+    compteurs.dissolution.value = dissolution - perteDissolution;
     compteurs.exaltation.value = 0;
-    message.content += "<br>Vous transformez " + convertis + " points de Stress en Expérience" + stressRoll.comment;
     await this.update({ "data.compteurs": compteurs });    
-    return true;
   }
 
   /* -------------------------------------------- */
-  async _stressRoll() {
-    let reveActuel = this.getReveActuel();
+  async _stressRoll(reveActuel) {
     let result = await RdDResolutionTable.roll(reveActuel, 0);
-    console.log("_stressRoll", result);
-    switch (result.code) {
-      case "sign": return { factor: 0.75, comment: " (75%): " + result.quality + " - " + result.roll + " sur " + result.score + "%" }
-      case "norm": return { factor: 0.5, comment: " (50%): " + result.quality + " - " + result.roll + " sur " + result.score + "%" }
-      case "echec": return { factor: 0.2, comment: " (20%): " + result.quality + " - " + result.roll + " sur " + result.score + "%" }
-      case "epart": return { factor: 0.1, comment: " (10%): " + result.quality + " - " + result.roll + " sur " + result.score + "%" }
-      case "etotal": return { factor: 0, comment: " (0%): " + result.quality + " - " + result.roll + " sur " + result.score + "%" }
-      case "part":
-        {
-          let second = await RdDResolutionTable.roll(reveActuel, 0);
-          console.log("_stressRoll", second);
-          switch (second.code) {
-            case "part": case "sign":
-              return { factor: 1.5, comment: " (150%): Double Particulière - " + result.roll + " puis " + second.roll + " sur " + result.score + "%" }
-            default:
-              return { factor: 1, comment: " (100%): " + result.quality + " - " + result.roll + " puis " + second.roll + " sur " + result.score + "%" }
-          }
-        }
+    if (result.isPart) {
+      result.second = await RdDResolutionTable.roll(reveActuel, 0);
     }
+    result.factor = this._getFacteurStress(result);
+    return result;
+  }
+  
+  _getFacteurStress(stressRoll) {
+    switch (stressRoll.code) {
+      case "sign": return 75;
+      case "norm": return 50;
+      case "echec": return 20;
+      case "epart": return 10;
+      case "etotal": return 0;
+      case "part":
+          if (stressRoll.second.isSign) {
+              stressRoll.quality = "Double Particulière";
+              return 150;
+          }
+          return 100;
+    }
+    return 0;
   }
 
   /* -------------------------------------------- */
diff --git a/module/rdd-commands.js b/module/rdd-commands.js
index 1523cb26..8190042c 100644
--- a/module/rdd-commands.js
+++ b/module/rdd-commands.js
@@ -249,7 +249,7 @@ export class RdDCommands {
   getCoutXpCarac(msg, params) {
     if (params && params.length == 1) {
       let to = Number(params[0]);
-      RdDCommands._chatAnswer(msg, `Coût pour passer une caractéristique de ${to - 1} à ${to}: ${RdDUtility.getCaractXp(to)}`);
+      RdDCommands._chatAnswer(msg, `Coût pour passer une caractéristique de ${to - 1} à ${to}: ${RdDUtility.getCaracXp(to)}`);
     }
     else {
       return false;
diff --git a/module/rdd-utility.js b/module/rdd-utility.js
index 8e51d62e..98dd7db5 100644
--- a/module/rdd-utility.js
+++ b/module/rdd-utility.js
@@ -412,11 +412,11 @@ export class RdDUtility {
   static getCaracNextXp(value) {
     const nextValue = Number(value) + 1;
     // xp est le coût pour atteindre cette valeur, on regarde donc le coût de la valeur+1
-    return RdDUtility.getCaractXp(nextValue);
+    return RdDUtility.getCaracXp(nextValue);
   }
 
-  static getCaractXp(targetValue) {
-    return tableCaracDerivee[targetValue].xp;
+  static getCaracXp(targetValue) {
+    return tableCaracDerivee[targetValue]?.xp ?? 200 ;
   }
 
   /* -------------------------------------------- */
diff --git a/templates/chat-resultat-transformer-stress.html b/templates/chat-resultat-transformer-stress.html
new file mode 100644
index 00000000..0bef2112
--- /dev/null
+++ b/templates/chat-resultat-transformer-stress.html
@@ -0,0 +1,18 @@
+<h4>
+  {{alias}} transforme {{rolled.factor}}% de son stress
+</h4>
+{{> "systems/foundryvtt-reve-de-dragon/templates/chat-infojet.html"}}
+{{#if rolled.isPart}}
+  <div>
+    <span>
+      Deuxième jet: {{rolled.second.roll}} <span class="rdd-roll-{{rolled.second.code}} strong-text">{{rolled.second.quality}}</span>
+    </span>
+  </div>
+{{/if}}
+<hr>
+<span>
+  Transformation de {{perte}} points de stress sur {{stress}}
+  {{~#if (gt dissolution 0)}}; {{dissolution}} points perdus par la dissolution{{/if~}}
+  {{~#if (gt exaltation 0)}}; {{exaltation}} points gagnés par l'exaltation{{/if~}}
+  , gain de {{xp}} points d'expérience
+</span>