try to change maximum on the fly

app.py

@@ -138,11 +138,13 @@ if __name__ == "__main__":
         def update_scale(width:int, height:int, image: np.ndarray):
 
             widthImage, heightImage = image.shape[:2]
-            scale = int((width/widthImage + height/heightImage)/2)
+            scaler = int((width/widthImage + height/heightImage)/2)
+            scale.maximum = scaler
             return {
-                maxScale: scale
+                maxScale: scaler
             }
         image.change(fn=update_scale, inputs=[width, height, image], outputs=[maxScale])
+        
         fit.click(fn=process, inputs=[width, height, scale, image], outputs=[plot_output, total])