diff --git a/e2e/solveur.e2e-spec.ts b/e2e/solveur.e2e-spec.ts
index 73d5e0d54d223b9ca11a0b0f3adac91ddb41a009..a542f32ba20103af9ac8f1e42e886e1df209998e 100644
--- a/e2e/solveur.e2e-spec.ts
+++ b/e2e/solveur.e2e-spec.ts
@@ -170,4 +170,20 @@ describe("Solveur - ", () => {
         // check "search parameter" value has not changed
         expect(await calcPage.getSelectValueText(sel)).toEqual(selText);
     });
+    
+    it("check solver searched parameter is set to 'bottom slope'", async () => {
+        // open "canal critical slope" example
+        const examples = await element.all(by.css("#examples-list .load-example"));
+        await examples[3].click();
+        await browser.sleep(500);
+
+        // select solver tab
+        await navbar.clickCalculatorTab(2);
+        await browser.sleep(500);
+
+        // check selected searched parameter text
+        const sel = calcPage.getSelectById("select_searched_param");
+        const selText = await calcPage.getSelectValueText(sel);
+        expect(selText).toEqual("If - Pente du fond (Sec. param.)");
+    });
 });
diff --git a/src/app/formulaire/elements/select-field-custom.ts b/src/app/formulaire/elements/select-field-custom.ts
index 1b7ddc7105ebcdc51e7f45e274a2cb55367a05a0..5c395281e5840ac070e79ad385bf96e4f806e4f2 100644
--- a/src/app/formulaire/elements/select-field-custom.ts
+++ b/src/app/formulaire/elements/select-field-custom.ts
@@ -3,7 +3,7 @@ import { ServiceFactory } from "../../services/service-factory";
 import { SelectField } from "./select-field";
 import { decodeHtml, arraysAreEqual } from "../../util";
 
-import { FishSpecies, Session, Solveur, FishPass, CalculatorType, Verificateur, Nub, PbCloison, PreBarrage } from "jalhyd";
+import { FishSpecies, Session, Solveur, FishPass, CalculatorType, Verificateur, Nub, PbCloison, PreBarrage, acSection } from "jalhyd";
 
 import { sprintf } from "sprintf-js";
 
@@ -30,7 +30,15 @@ export class SelectFieldCustom extends SelectField {
             case "solveur_searched": // Solveur, paramètre recherché (à faire varier)
                 const sp = (nub as Solveur).searchedParameter;
                 if (sp !== undefined) {
-                    this.setValueFromId(this._entriesBaseId + sp.nubUid + "_" + sp.symbol);
+                    let parentNubUid;
+                    const parentNub = sp.getParentComputeNode(false);
+                    if (parentNub instanceof acSection) {
+                        parentNubUid = parentNub.uid;
+                    }
+                    else {
+                        parentNubUid = sp.nubUid
+                    }
+                    this.setValueFromId(this._entriesBaseId + parentNubUid + "_" + sp.symbol);
                 }
                 break;
 
@@ -225,7 +233,7 @@ export class SelectFieldCustom extends SelectField {
         // default to first available entry if any
         if (this._entries.length > 0) {
             if (this._multiple) {
-                this.setValue([ this._entries[0] ]);
+                this.setValue([this._entries[0]]);
             } else {
                 this.setValue(this._entries[0]);
             }
@@ -265,10 +273,10 @@ export class SelectFieldCustom extends SelectField {
         } else {
             // keep previously selected entry(ies) if possible
             if (pse) {
-                if (! Array.isArray(pse) && pse.id) {
+                if (!Array.isArray(pse) && pse.id) {
                     this.setValueFromId(pse.id);
                 } else if (Array.isArray(pse) && pse.length > 0) {
-                    this.setValueFromId(pse.map((e) => e.id ));
+                    this.setValueFromId(pse.map((e) => e.id));
                 } else {
                     this.setDefaultValue();
                 }
@@ -287,16 +295,16 @@ export class SelectFieldCustom extends SelectField {
         this._selectedEntry = v;
         // if value changed
         const valueChanged = (
-            ! previousSelectedEntry
+            !previousSelectedEntry
             || (
-                ! Array.isArray(previousSelectedEntry)
-                && ! Array.isArray(v)
+                !Array.isArray(previousSelectedEntry)
+                && !Array.isArray(v)
                 && previousSelectedEntry.id !== v.id
             )
             || (
                 Array.isArray(previousSelectedEntry)
                 && Array.isArray(v)
-                && ! arraysAreEqual(previousSelectedEntry, v, "id", true)
+                && !arraysAreEqual(previousSelectedEntry, v, "id", true)
             )
         );
         if (valueChanged) {
@@ -327,7 +335,7 @@ export class SelectFieldCustom extends SelectField {
                 }
             }
         }
-        if (! found) {
+        if (!found) {
             this.setDefaultValue();
         }
     }