diff --git a/script/daq/PumpProbeXES_DelayScan.py b/script/daq/PumpProbeXES_DelayScan.py
index b9f950f..d86b924 100644
--- a/script/daq/PumpProbeXES_DelayScan.py
+++ b/script/daq/PumpProbeXES_DelayScan.py
@@ -102,12 +102,16 @@ def run_aquisition():
 def before_sample():
     DELAY.write(DelayOn)
     run_aquisition()
+
+class PseudoPositioner(Writable):
+    def write(self,pos):
+        DelayOn=pos
     
     
 try:    
    # tscan(detectors + [ROI1_Off, ROI2_Off, ROI1_Diff, ROI2_Diff], 30, 0, before_read = before_sample, \
    #             line_plots = [ROI1_Diff, ROI2_Diff])
-    lscan(DelayOn, detectors + [ROI1_Off, ROI2_Off, ROI1_Diff, ROI2_Diff], 0, 200,20, before_read = before_sample, line_plots = [ROI1_Diff, ROI2_Diff,SAI02], enabled_plots = [ROI1_Diff, ROI2_Diff,SAI02])
+    lscan(PseudoPositioner, detectors + [ROI1_Off, ROI2_Off, ROI1_Diff, ROI2_Diff], 0, 200,20, before_read = before_sample, line_plots = [ROI1_Diff, ROI2_Diff,SAI02], enabled_plots = [ROI1_Diff, ROI2_Diff,SAI02])
 finally:
     for det in detectors:
         det.close()