tableau · jacalata · Jan 14, 2026 · Nov 21, 2025 · Nov 11, 2025 · Nov 11, 2025
diff --git a/tableauserverclient/server/request_options.py b/tableauserverclient/server/request_options.py
@@ -387,7 +387,14 @@ def parameter(self, name: str, value: str) -> Self:
        Self
            The current object
        """
-        self.view_parameters.append((name, value))
+        prefix = "vf_Parameters."
+        if name.startswith(prefix):
+            proper_name = name
+        elif name.startswith("Parameters."):
+            proper_name = f"vf_{name}"
+        else:
+            proper_name = f"{prefix}{name}"
+        self.view_parameters.append((proper_name, value))
        return self

    def _append_view_filters(self, params) -> None:

diff --git a/test/test_request_option.py b/test/test_request_option.py
@@ -339,14 +339,25 @@ def test_filtering_parameters(server: TSC.Server) -> None:
        opts = TSC.PDFRequestOptions()
        opts.parameter("name1@", "value1")
        opts.parameter("name2$", "value2")
+        opts.parameter("Parameters.name3", "value3")
+        opts.parameter("vf_Parameters.name4", "value4")
        opts.page_type = TSC.PDFRequestOptions.PageType.Tabloid

+        # While Tableau Server side IS case sensitive with the query string,
+        # requiring the prefix to be "vf_Parameters", requests does not end
+        # up preserving the case sensitivity with the Response.Request
+        # object. It also shows up lowercased in the requests_mock request
+        # history.
        resp = server.workbooks.get_request(url, request_object=opts)
        query_params = parse_qs(resp.request.query)
-        assert "name1@" in query_params
-        assert "value1" in query_params["name1@"]
-        assert "name2$" in query_params
-        assert "value2" in query_params["name2$"]
+        assert "vf_parameters.name1@" in query_params
+        assert "value1" in query_params["vf_parameters.name1@"]
+        assert "vf_parameters.name2$" in query_params
+        assert "value2" in query_params["vf_parameters.name2$"]
+        assert "vf_parameters.name3" in query_params
+        assert "value3" in query_params["vf_parameters.name3"]
+        assert "vf_parameters.name4" in query_params
+        assert "value4" in query_params["vf_parameters.name4"]
        assert "type" in query_params
        assert "tabloid" in query_params["type"]

@@ -369,6 +380,9 @@ def test_queryset_endpoint_pagesize_filter(server: TSC.Server, page_size: int) -
        _ = list(queryset)


+44
+
+
 @pytest.mark.parametrize("page_size", [1, 10, 100, 1_000])
 def test_queryset_pagesize_filter(server: TSC.Server, page_size: int) -> None:
    with requests_mock.mock() as m: