diff --git a/HEN_HOUSE/omega/progs/beamdp/beamdp.mortran b/HEN_HOUSE/omega/progs/beamdp/beamdp.mortran
index 3fe417908..7cf378343 100644
--- a/HEN_HOUSE/omega/progs/beamdp/beamdp.mortran
+++ b/HEN_HOUSE/omega/progs/beamdp/beamdp.mortran
@@ -1190,16 +1190,21 @@ IF(CHOICE1=11)[
     IF ~EGSPERT[ CALL HELP_MESSAGE(19); ]
     :LB2:
     OUTPUT;
-    (/' Number(default=100), IQ(-1,0,1,2,3) =?'/' ',$);
+    (/' From particle no. (default=1), to particle no. (default=100),'
+      ' IQ(-1,0,1,2,3) =?'/' ',$);
     READ(5,'(3I12)',ERR=:LB1:)NUMBERST,NUMBERP,IQSMFP(1);
     GOTO :LB3:;
     :LB1:
       CALL HELP_MESSAGE(19);
       GOTO :LB2:;
     :LB3:
+    IF (NUMBERST<1)[
+        NUMBERST=1;
+        OUTPUT;(/' First particle no. defaults to 1!'); 
+        ]
     IF (NUMBERP<1)[
         NUMBERP=100;
-        OUTPUT;(/' Number defaults to 100!');
+        OUTPUT;(/' Last particle no. defaults to 100!');
         ]
     IF(IQSMFP(1)<-1)|(IQSMFP(1)>3)[
         IQSMFP(1)=2;"defaults to all the particles"
@@ -5250,6 +5255,7 @@ IF(i_iaea_in=1)[
   IF(IMUIDX1~=0)[
     OUTPUT;(' Fractional MU index also scored in phase space data. '/);
   ]
+  NINC=LPARANINC;
 ]
 ELSE[
 
diff --git a/HEN_HOUSE/omega/progs/gui/beamdp/beamdp_gui.tcl b/HEN_HOUSE/omega/progs/gui/beamdp/beamdp_gui.tcl
index 291ae1a29..9061e230b 100755
--- a/HEN_HOUSE/omega/progs/gui/beamdp/beamdp_gui.tcl
+++ b/HEN_HOUSE/omega/progs/gui/beamdp/beamdp_gui.tcl
@@ -667,7 +667,8 @@ You can use bits 1 to 23 for these filters.  For more information, \
 	    # get number of particles, iq.
 	    set w5 $w.opt11
 	    frame $w5
-	    textfield $w5.f1 "Number of particles to be listed (default 100)" fpar(1)
+            textfield $w5.f0 "Start at particle no. (defaults to 1)" fpar(0)
+	    textfield $w5.f1 "End at particle no. (default 100)" fpar(1)
 	    set text1(1) "Particle type"
 
 	    frame $w5.inp1
@@ -1447,13 +1448,14 @@ proc create_script {} {
 	}
 	if $ichoice==11 {
 	    # Put numberp,charge
+            if { [catch {expr $fpar(0)}]==1 } { set fpar(0) 1 }
 	    if { [catch {expr $fpar(1)}]==1 } { set fpar(1) 100 }
 	    if $charge==100 {
 		tk_dialog .failed "Failed" "The charge is not \
 			specified.  Specify and try again." error 0 OK
 		return 0
 	    }
-	    puts $id "$fpar(1), $charge"
+	    puts $id "$fpar(0), $fpar(1), $charge"
 	}
 
 	if { $ichoice>0 && $ichoice<10 || $ichoice==11} {