diff --git a/src/app/formulaire/definition/concrete/form-pab.ts b/src/app/formulaire/definition/concrete/form-pab.ts
index 9c05c514a80f37d0c672a5951204fe5231d36e14..3a5bac9c4b167c4884821ca978c369090866920f 100644
--- a/src/app/formulaire/definition/concrete/form-pab.ts
+++ b/src/app/formulaire/definition/concrete/form-pab.ts
@@ -90,6 +90,11 @@ export class FormulairePab extends FormulaireBase {
         parent.deleteChild(parent.getIndexForChild(sn));
     }
 
+    public doCompute() {
+        this.dumpPabStructure(this.pabNub);
+        super.doCompute();
+    }
+
     public createFieldset(parent: FormulaireNode, json: {}, data?: {}, nub?: Nub): FieldSet {
         if (json["calcType"] === "PabCloisons") {
             // indice après lequel insérer le nouveau FieldSet
@@ -235,15 +240,27 @@ export class FormulairePab extends FormulaireBase {
                 case "fs_bassin":
                     switch (data.name) {
                         case "modeleCloisons":
-                            // change PabCloisons Nub property "modeleCloisons" and reinit it
+                            // change PabCloisons property "modeleCloisons" and reinit it
                             // with new Cloisons values
                             const newModeleUID = sender.properties.getPropValue("modeleCloisons");
                             (sender.nub as PabCloisons).setModel(newModeleUID);
                             // treat the fieldset as new to re-subscribe to Nub properties change events
                             this.afterParseFieldset(sender);
                             this.reset();
+                            break;
+                    }
+                    break;
 
-                            // this.dumpPabStructure(this.currentNub as Pab);
+                case "fs_cloison_aval":
+                    switch (data.name) {
+                        case "modeleCloisonAval":
+                            // change Pab property "modeleCloisonAval" and reinit it
+                            // with new ParallelStructure values
+                            const newModeleAvalUID = sender.properties.getPropValue("modeleCloisonAval");
+                            this.pabNub.setDownWall(newModeleAvalUID);
+                            // treat the fieldset as new to re-subscribe to Nub properties change events
+                            this.afterParseFieldset(sender);
+                            this.reset();
                             break;
                     }
                     break;