Update app.py

app.py

@@ -25,7 +25,7 @@ def add_heatmap_layer(map_obj, data, column_name, colormap_name, radius=15):
             fill_opacity=0.7,
             color='black',
             weight=0.5,
-            popup=f"{column_name}: {value:.2f}"
+            popup=f"{column_name}: {row[column_name]:.2f}"  # Fix here
         ).add_to(heat_layer)
 
     heat_layer.add_to(map_obj)