diff --git a/app/winapp/rtkpost/postmain.cpp b/app/winapp/rtkpost/postmain.cpp
index ae3653eaa..2143784b6 100644
--- a/app/winapp/rtkpost/postmain.cpp
+++ b/app/winapp/rtkpost/postmain.cpp
@@ -894,6 +894,11 @@ int __fastcall TMainForm::GetOption(prcopt_t &prcopt, solopt_t &solopt,
     prcopt.maxgdop  =RejectGdop;
     prcopt.maxinno  =RejectThres;
     prcopt.outsingle=OutputSingle;
+    prcopt.wlmodear=0;
+    if (AmbRes>3) {
+        prcopt.modear=ARMODE_WL;
+        if(AmbRes==5) prcopt.wlmodear=1;
+    }
     if (BaseLineConst) {
         prcopt.baseline[0]=BaseLine[0];
         prcopt.baseline[1]=BaseLine[1];
@@ -916,7 +921,7 @@ int __fastcall TMainForm::GetOption(prcopt_t &prcopt, solopt_t &solopt,
     else if (RefPosType<=2) {
         for (int i=0;i<3;i++) prcopt.rb[i]=RefPos[i];
     }
-    else prcopt.refpos=RefPosType-2;
+    else prcopt.refpos=RefPosType==6?6:RefPosType-2;
     
     if (RovAntPcv) {
         strcpy(prcopt.anttype[0],RovAnt.c_str());
diff --git a/app/winapp/rtkpost/postopt.cpp b/app/winapp/rtkpost/postopt.cpp
index 5be742db4..b82404770 100644
--- a/app/winapp/rtkpost/postopt.cpp
+++ b/app/winapp/rtkpost/postopt.cpp
@@ -632,8 +632,16 @@ void __fastcall TOptDialog::LoadOpt(AnsiString file)
 	PosOpt4	     ->Checked		=prcopt.posopt[3];
 	PosOpt5	     ->Checked		=prcopt.posopt[4];
 	PosOpt6	     ->Checked		=prcopt.posopt[5];
-	
-	AmbRes		 ->ItemIndex	=prcopt.modear;
+
+	if(prcopt.modear>ARMODE_FIXHOLD) {
+		if(prcopt.wlmodear==0) {
+			AmbRes   ->ItemIndex    =4;
+		} else {
+			AmbRes   ->ItemIndex    =5;
+		}
+	} else {
+		AmbRes  ->ItemIndex	    =prcopt.modear;
+	}
 	GloAmbRes	 ->ItemIndex	=prcopt.glomodear;
 	BdsAmbRes	 ->ItemIndex	=prcopt.bdsmodear;
 	ValidThresAR ->Text			=s.sprintf("%.3g",prcopt.thresar[0]);
@@ -703,7 +711,7 @@ void __fastcall TOptDialog::LoadOpt(AnsiString file)
 	IntpRefObs	 ->ItemIndex	=prcopt.intpref;
 	SbasSat		 ->Text			=s.sprintf("%d",prcopt.sbassatsel);
 	RovPosType	 ->ItemIndex	=prcopt.rovpos==0?0:prcopt.rovpos+2;
-	RefPosType	 ->ItemIndex	=prcopt.refpos==0?0:prcopt.refpos+2;
+	RefPosType	 ->ItemIndex	=prcopt.refpos==0?0:prcopt.refpos==POSOPT_RINEX_DYN?6:prcopt.refpos+2;
 	RovPosTypeP					=RovPosType->ItemIndex;
 	RefPosTypeP					=RefPosType->ItemIndex;
 	SetPos(RovPosType->ItemIndex,editu,prcopt.ru);
@@ -779,6 +787,11 @@ void __fastcall TOptDialog::SaveOpt(AnsiString file)
 //	prcopt.mapfunc	=MapFunc	->ItemIndex;
 	
 	prcopt.modear	=AmbRes		->ItemIndex;
+	prcopt.wlmodear=0;
+	if(AmbRes->ItemIndex>3) {
+		prcopt.modear=ARMODE_WL;
+		if(AmbRes->ItemIndex==5) prcopt.wlmodear=1;
+	}
 	prcopt.glomodear=GloAmbRes	->ItemIndex;
 	prcopt.bdsmodear=BdsAmbRes	->ItemIndex;
 	prcopt.thresar[0]=str2dbl(ValidThresAR->Text);
@@ -843,7 +856,7 @@ void __fastcall TOptDialog::SaveOpt(AnsiString file)
 	prcopt.intpref	=IntpRefObs->ItemIndex;
 	prcopt.sbassatsel=SbasSat->Text.ToInt();
 	prcopt.rovpos=RovPosType->ItemIndex<3?0:RovPosType->ItemIndex-2;
-	prcopt.refpos=RefPosType->ItemIndex<3?0:RefPosType->ItemIndex-2;
+	prcopt.refpos=RefPosType->ItemIndex<3?0:RefPosType->ItemIndex==6?POSOPT_RINEX_DYN:RefPosType->ItemIndex-2;
 	if (prcopt.rovpos==0) GetPos(RovPosType->ItemIndex,editu,prcopt.ru);
 	if (prcopt.refpos==0) GetPos(RefPosType->ItemIndex,editr,prcopt.rb);
 	
diff --git a/app/winapp/rtkpost/postopt.dfm b/app/winapp/rtkpost/postopt.dfm
index 31e38bdef..0632e5cb5 100644
--- a/app/winapp/rtkpost/postopt.dfm
+++ b/app/winapp/rtkpost/postopt.dfm
@@ -535,7 +535,8 @@ object OptDialog: TOptDialog
           'Continuous'
           'Instantaneous'
           'Fix and Hold'
-          'PPP-AR')
+          'Wide Lane'
+          'Wide Lane with Fix and Hold')
       end
       object ValidThresAR: TEdit
         Left = 248
@@ -1260,7 +1261,7 @@ object OptDialog: TOptDialog
           Caption = 'Delta-E/N/U (m)'
         end
         object Label24: TLabel
-          Left = 149
+          Left = 231
           Top = 17
           Width = 31
           Height = 13
@@ -1351,7 +1352,7 @@ object OptDialog: TOptDialog
         object RefPosType: TComboBox
           Left = 6
           Top = 14
-          Width = 137
+          Width = 219
           Height = 21
           Style = csDropDownList
           ItemIndex = 0
@@ -1364,10 +1365,11 @@ object OptDialog: TOptDialog
             'X/Y/Z-ECEF (m)'
             'Average of Single Position'
             'Get from Position File'
-            'RINEX Header Postion')
+            'RINEX Header Postion'
+            'RINEX Header Position and Site Occupation Events')
         end
         object DatumRef: TComboBox
-          Left = 186
+          Left = 268
           Top = 14
           Width = 76
           Height = 21