diff --git a/cpdctrl/cpdctrl-interactive.py b/cpdctrl/cpdctrl-interactive.py
index 9c19d0d..07e3034 100644
--- a/cpdctrl/cpdctrl-interactive.py
+++ b/cpdctrl/cpdctrl-interactive.py
@@ -81,7 +81,7 @@ test = False
 # global variable for the instrument/client returned by pyvisa/bleak
 dev: VoltageMeasurementDevice|None = None
 led: LedControlDevice|None = None
-data_collector = DataCollector(data_path=settings["datadir"], data_name="interactive", dirname="interactive_test", dir_exists_is_ok=True)
+data_collector = DataCollector(data_path=settings["datadir"], data_name="interactive", dirname="interactive_test", add_number_if_dir_exists=True)
 t0 = 0
 data = None
 md = None