diff --git a/BlockStackApp.py b/BlockStackApp.py
index efaf9aa..52b2136 100644
--- a/BlockStackApp.py
+++ b/BlockStackApp.py
@@ -97,7 +97,9 @@ class BlockStackApp(QWidget):
 
         for port, bench_id, serial_number in bench_list:
             block_id = f"{bench_id}"
+            
             self.worker = UpdateWorker(serial_number, bench_id, port, block_id, self)
+
             self.layout.addWidget(self.worker.block)
             self.worker.change_color_signal.connect(self.change_button_color)
             self.worker.update_signal.connect(self.update_block)
@@ -199,9 +201,11 @@ class BlockStackApp(QWidget):
         print(f"Data received: {data}")
 
     def update_block(self, is_running, diameter_value, position_value):
+        ts = round(time.time() * 1000)
+
         # Update the block with diameter_value and position_value
         worker = self.sender()
-        diameter_avg = 2.0000
+        diameter_avg = 0.0000
         est_wgh = 0
         worker.block.dia_label.setText(f"{diameter_value:.3f} ")
         worker.block.len_label.setText(f"{position_value/1000:.3f}")
@@ -228,7 +232,7 @@ class BlockStackApp(QWidget):
                 worker.block.max_label.setText(f"{worker.diameter_max:.3f} ")
             
             # push data to memory for report
-            worker.data_list.append((position_value, diameter_value))
+            worker.data_list.append((ts, position_value, diameter_value))
 
             # push data to graph and update it
             self.update_graph(worker, diameter_value)
diff --git a/UpdateWorker.py b/UpdateWorker.py
index 16b3c9a..cd6aedf 100644
--- a/UpdateWorker.py
+++ b/UpdateWorker.py
@@ -138,7 +138,7 @@ class UpdateWorker(QThread):
         endstamp = datetime.now().strftime("%Y%m%d_%H%M%S")
 
 
-        outfilename = os.path.join("data", f"{spool}_{startstamp}.fsl")
+        outfilename = os.path.join("data", f"{spool}_{startstamp}.fslp")
 
 
         with open(outfilename, "w") as outfile:
@@ -147,8 +147,8 @@ class UpdateWorker(QThread):
             outfile.write(F"#spool: {spool}\n")
             outfile.write(F"#material: {vendor} {material} {batch} {description}\n")
 
-            for position, diameter in self.data_list:
-                outfile.write(f"d:{diameter},p:{position}\n")
+            for ts, position, diameter in self.data_list:
+                outfile.write(f"t:{ts},d:{diameter},p:{position}\n")
 
             outfile.write(F"#end: {endstamp}\n")