diff --git a/Dockerfile b/Dockerfile
index e1f49fe..d7a8414 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -98,7 +98,7 @@ RUN pip install -r /tmp/requirements.txt
 
 # Install Node.js and set up symlinks
 RUN set -eux; \
-    NODE_VERSION="v22.10.0" \
+    NODE_VERSION="v22.19.0" \
     ARCH= && dpkgArch="$(dpkg --print-architecture)"; \
     case "${dpkgArch##*-}" in \
         amd64) ARCH='x64';; \
diff --git a/python-sync-actions/src/component.py b/python-sync-actions/src/component.py
index 0e57206..e1b92c3 100644
--- a/python-sync-actions/src/component.py
+++ b/python-sync-actions/src/component.py
@@ -217,6 +217,12 @@ def _build_url(self, base_url: str, endpoints: list[dict], selected_job: str) ->
         endpoint = ep.get("endpoint", "").lstrip("/")
         placeholders = ep.get("placeholders", {})
         params = ep.get("params", {})
+        user_params = self._configuration.user_parameters if self._configuration else {}
+        params = self._conf_helpers.fill_in_user_parameters(
+            params,
+            user_params,
+            evaluate_conf_objects_functions=True
+        )
 
         try:
             formatted_path = endpoint.format(**placeholders)
@@ -238,7 +244,7 @@ def _get_values_to_hide(self) -> list[str]:
         Get values to hide
         Args:
         """
-        user_params = self._configuration.user_parameters
+        user_params = self._configuration.user_parameters if self._configuration else {}
         secrets = [value for key, value in user_params.items() if key.startswith("#") or key.startswith("__")]
 
         # get secrets from the auth method
diff --git a/python-sync-actions/src/configuration.py b/python-sync-actions/src/configuration.py
index b366a8a..1a63685 100644
--- a/python-sync-actions/src/configuration.py
+++ b/python-sync-actions/src/configuration.py
@@ -336,7 +336,12 @@ def build_api_request(configuration: dict) -> List[Tuple[ApiRequest, RequestCont
 
         method = endpoint_config.get("method", "GET")
 
-        request_content = build_request_content(method, endpoint_config.get("params", {}))
+        # evaluate functions inside the params
+        user_parameters = configuration.get("parameters", {}).get("config", {})
+        params = endpoint_config.get("params", {})
+        params = ConfigHelpers().fill_in_user_parameters(params, user_parameters, evaluate_conf_objects_functions=True)
+        request_content = build_request_content(method, params)
+
         # use real method
         if method.upper() == "FORM":
             method = "POST"
diff --git a/python-sync-actions/tests/calls/010-default-header/config.json b/python-sync-actions/tests/calls/010-default-header/config.json
index 9b5af2e..b0354b1 100644
--- a/python-sync-actions/tests/calls/010-default-header/config.json
+++ b/python-sync-actions/tests/calls/010-default-header/config.json
@@ -31,7 +31,13 @@
     "http": {
       "headers": {
           "Authorization": {
-            "attr": "#BEARER_TOKEN"
+            "function": "concat",
+            "args": [
+              "Bearer ",
+              {
+                "attr": "#BEARER_TOKEN"
+              }
+            ]
           }
         }
     }
diff --git a/python-sync-actions/tests/calls/011-params-func-eval/config.json b/python-sync-actions/tests/calls/011-params-func-eval/config.json
new file mode 100644
index 0000000..abe17f3
--- /dev/null
+++ b/python-sync-actions/tests/calls/011-params-func-eval/config.json
@@ -0,0 +1,61 @@
+{
+  "storage": {},
+  "parameters": {
+    "__SELECTED_JOB": "0",
+    "config": {
+      "jobs": [
+        {
+          "endpoint": "011-params-func-eval/orders",
+          "dataType": "orders",
+          "method": "POST",
+          "params": {
+            "greeting": {
+              "value":
+                {
+                  "hi": {
+                    "function": "concat",
+                    "args": [
+                      "hello",
+                      "-world"
+                    ]
+                  }
+                }
+
+            }
+          }
+        }
+      ],
+      "debug": false,
+      "outputBucket": "in.c-",
+      "incrementalOutput": false,
+      "#BEARER_TOKEN": "token"
+    },
+    "api": {
+      "baseUrl": "http://mock-server:80/",
+      "http": {
+        "headers": {
+          "Authorization": {
+            "attr": "#BEARER_TOKEN"
+          }
+        }
+      }
+    },
+    "http": {
+      "maxRetries": 10,
+      "codes": [
+        500,
+        502,
+        503,
+        504,
+        408,
+        420,
+        429
+      ]
+    }
+  },
+  "action": "test_request",
+  "image_parameters": {
+  },
+  "authorization": {
+  }
+}
diff --git a/python-sync-actions/tests/calls/011-params-func-eval/orders.request b/python-sync-actions/tests/calls/011-params-func-eval/orders.request
new file mode 100644
index 0000000..e259a10
--- /dev/null
+++ b/python-sync-actions/tests/calls/011-params-func-eval/orders.request
@@ -0,0 +1,3 @@
+POST /011-params-func-eval/orders
+
+{"greeting": {"value": {"hi": "hello-world"}}}
\ No newline at end of file
diff --git a/python-sync-actions/tests/calls/011-params-func-eval/orders.requestHeaders b/python-sync-actions/tests/calls/011-params-func-eval/orders.requestHeaders
new file mode 100644
index 0000000..68862da
--- /dev/null
+++ b/python-sync-actions/tests/calls/011-params-func-eval/orders.requestHeaders
@@ -0,0 +1,4 @@
+accept: */*
+authorization: token
+content-length: 46
+content-type: application/json
diff --git a/python-sync-actions/tests/calls/011-params-func-eval/orders.response b/python-sync-actions/tests/calls/011-params-func-eval/orders.response
new file mode 100644
index 0000000..71d78ff
--- /dev/null
+++ b/python-sync-actions/tests/calls/011-params-func-eval/orders.response
@@ -0,0 +1,82 @@
+{
+  "nested": {
+    "orders": [
+      {
+        "id": 1,
+        "customer": "John Doe",
+        "address": "123 Main St",
+        "items": [
+          {
+            "id": 1,
+            "name": "Widget",
+            "price": 9.99,
+            "quantity": 2
+          },
+          {
+            "id": 2,
+            "name": "Thing",
+            "price": 5.99,
+            "quantity": 5
+          }
+        ]
+      },
+      {
+        "id": 2,
+        "customer": "Jan Novak",
+        "address": "123 Main St",
+        "items": [
+          {
+            "id": 1,
+            "name": "Widget",
+            "price": 9.99,
+            "quantity": 2
+          },
+          {
+            "id": 2,
+            "name": "Thing",
+            "price": 5.99,
+            "quantity": 5
+          }
+        ]
+      },
+      {
+        "id": 3,
+        "customer": "Jana Novakova",
+        "address": "123 Main St",
+        "items": [
+          {
+            "id": 1,
+            "name": "Widget",
+            "price": 9.99,
+            "quantity": 2
+          },
+          {
+            "id": 2,
+            "name": "Thing",
+            "price": 5.99,
+            "quantity": 5
+          }
+        ]
+      },
+      {
+        "id": 4,
+        "customer": "Bob Smith",
+        "address": "123 Main St",
+        "items": [
+          {
+            "id": 1,
+            "name": "Widget",
+            "price": 9.99,
+            "quantity": 2
+          },
+          {
+            "id": 2,
+            "name": "Thing",
+            "price": 5.99,
+            "quantity": 5
+          }
+        ]
+      }
+    ]
+  }
+}
\ No newline at end of file