--- a
+++ b/script_update_Threshold_and_display.m
@@ -0,0 +1,49 @@
+% This script does the following 
+% Update the Current Thresholds and update the text box named "Threshold_Val_display_object"
+% Update the BOX locations
+
+% handles.Bmode is false if the input data is Pulsed Doppler data
+if( handles.Bmode ~= true ), return; end
+
+% Set the threshold value
+handles.Current_Threshold   = (handles.Max_threshold - handles.Min_threshold) * handles.Threshold_Slider.Value + handles.Min_threshold;
+
+% Set the display to the current threshold
+handles.Threshold_Val_display_object.String = num2str(floor(handles.Current_Threshold));
+
+% Processing only one frame to make the display faster. If you process all 
+% the frames, update algorithm will be delayed. We will run the process 
+% on frames when the user press "Play movie button"
+Input_Image                 = handles.first_frame;                  
+Input_Image                 = Input_Image .* bwareaopen(Input_Image > handles.Current_Threshold, 15);
+
+% Update the tag for the button "Add BOX #"
+handles.Add_Box.String      = sprintf('Add BOX %d', handles.number_Box+1);
+
+% This program updates the variable Rectangular Proximal/Diatal Position, 
+% Mask and rotation to the latest value. 
+
+% This if-else condition is to address the initializtion scripts.
+for Num = 1:handles.number_Box
+    
+    Num_updated  	= script_adjust_NUM_for_intialization(Num);
+    
+    % Save the Box information
+    script_update_rectangular_box_handles;
+    
+    % Ensure that proximal wall rectangular box is above the distal wall
+    % box. If not, switch the box.
+    Swap_proximal_distal_box;
+    
+    % Ensure that the Proximal and Distal rectangular boxes have common 
+    % region. If not, delete the BOX
+    check_if_boxes_have_common_region;
+    
+end
+% Update the plot
+update_plot(Input_Image, handles.Plot_Image, ...
+                handles.Rect_Proximal_Position, handles.Rect_Distal_Position, ...
+                handles.Rect_proximal_Rotation_in_degree, handles.Rect_distal_Rotation_in_degree);
+
+% Clear the diameter plot with a dummay image
+script_clear_diameter_plot