Parsing negative numeric values correctly

Author: juliomateoslangerak

microscope/controllers/asi.py

@@ -513,10 +513,10 @@ def _add_settings(self, settings) -> None:
         """
         for axis, axis_settings in settings.items():
             for setting_name, setting_params in axis_settings.items():
-                if setting_params["value"].isdigit():
+                if setting_params["value"].replace("-", "", 1).isdigit():
                     value = int(setting_params["value"])
                     dtype = "int"
-                elif setting_params["value"].replace(".", "", 1).isdigit():
+                elif setting_params["value"].replace(".", "", 1).replace("-", "", 1).isdigit():
                     value = float(setting_params["value"])
                     dtype = "float"
                 else: