diff --git a/src/midrc_react/core/jsdconfig.py b/src/midrc_react/core/jsdconfig.py
index 11f4af1..37a04fe 100644
--- a/src/midrc_react/core/jsdconfig.py
+++ b/src/midrc_react/core/jsdconfig.py
@@ -68,7 +68,7 @@ class ConfigData(BaseModel):
     """
     # Define fields based on expected YAML structure
     data_sources: DataSourceConfigList = Field(..., alias='data sources')
-    custom_age_ranges: Optional[Dict[str, List[Union[int, float]]]] = Field(None, alias='custom_age_range')
+    custom_age_ranges: Optional[Dict[str, List[List[Union[int, float]]]]] = Field(None, alias='custom age ranges')
 
     class Config:
         validate_by_name = True
diff --git a/src/midrc_react/gui/pyside6/dataselectiongroupbox.py b/src/midrc_react/gui/pyside6/dataselectiongroupbox.py
index 011027c..059ff16 100644
--- a/src/midrc_react/gui/pyside6/dataselectiongroupbox.py
+++ b/src/midrc_react/gui/pyside6/dataselectiongroupbox.py
@@ -123,6 +123,8 @@ def get_category_info(self):
         """
         category_list = [self.category_combobox.itemText(i) for i in range(self.category_combobox.count())]
         category_index = self.category_combobox.currentIndex()
+        if category_index >=0 and category_index < len(category_list):
+            self.data.update_category_list(category_list, category_index)
         return self.data.category_info
 
     def add_file_combobox_to_layout(self, auto_populate: bool = True):