diff --git a/src/param/param-base.ts b/src/param/param-base.ts
index 027b62cdc0c0f90ce5235d3c5d1533bd2c18056c..4793eca6b59eb2ff33bc0abaa9b94c675eaace0e 100644
--- a/src/param/param-base.ts
+++ b/src/param/param-base.ts
@@ -250,6 +250,10 @@ export class BaseParam extends JalhydObject implements IObjectReference, Iterabl
         return this._paramValues.valueMode;
     }
 
+    public set valueMode(m: ParamValueMode) {
+        this._paramValues.valueMode = m;
+    }
+
     // interface IObjectReference
 
     public defineReference(target: IReferencedObject, desc: string) {