diff --git a/libs/yscript/script.cpp b/libs/yscript/script.cpp
index f7e1b575..93729a94 100644
--- a/libs/yscript/script.cpp
+++ b/libs/yscript/script.cpp
@@ -182,6 +182,18 @@ bool ScriptContext::copyFields(ObjList& stack, const ScriptContext& original, Ge
     return ok;
 }
 
+// Add string parameters from list
+void ScriptContext::addFields(const NamedList& list, const char* skipPrefix)
+{
+    if (TelEngine::null(skipPrefix))
+	skipPrefix = 0;
+    for (const ObjList* o = list.paramList()->skipNull(); o; o = o->skipNext()) {
+	const NamedString* p = static_cast<const NamedString*>(o->get());
+	if (!(skipPrefix && p->name().startsWith(skipPrefix)))
+	    m_params.addParam(new ExpOperation(p->c_str(),p->name()));
+    }
+}
+
 void ScriptContext::fillFieldNames(ObjList& names)
 {
     bool checkDupl = !(YOBJECT(JsObject,this));
diff --git a/libs/yscript/yatescript.h b/libs/yscript/yatescript.h
index 799a8f02..2843e889 100644
--- a/libs/yscript/yatescript.h
+++ b/libs/yscript/yatescript.h
@@ -1517,6 +1517,13 @@ public:
      */
     virtual bool copyFields(ObjList& stack, const ScriptContext& original, GenObject* context);
 
+    /**
+     * Add string parameters from list
+     * @param list Parameters list
+     * @param skipPrefix Skip parameters whose name start with specified prefix
+     */
+    virtual void addFields(const NamedList& list, const char* skipPrefix = "__");
+
     /**
      * Try to evaluate a single field searching for a matching context
      * @param stack Evaluation stack in use, field value must be pushed on it