def METHOD_NAME(gui: Gui, test_client, helpers):
    gui._bind_var_val("x", [10, 20])
    md_string = "<|{x}|slider|>"
    expected_list = [
        "<Slider",
        'updateVarName="_TpLn_tpec_TpExPr_x_TPMDL_0"',
        "value={_TpLn_tpec_TpExPr_x_TPMDL_0}",
    ]
    helpers.test_control_md(gui, md_string, expected_list)