diff --git a/slsDetectorSoftware/slsDetector/slsDetectorCommand.cpp b/slsDetectorSoftware/slsDetector/slsDetectorCommand.cpp
index 398c937f9..82b358700 100644
--- a/slsDetectorSoftware/slsDetector/slsDetectorCommand.cpp
+++ b/slsDetectorSoftware/slsDetector/slsDetectorCommand.cpp
@@ -4533,7 +4533,9 @@ string slsDetectorCommand::cmdDetectorSize(int narg, char *args[], int action) {
 		myDet->setReceiverOnline(ONLINE_FLAG);
 		ret=myDet->setDynamicRange(val);
 	} else if (cmd=="roi") {
-		myDet->getROI(ret);
+		ROI* r = myDet->getROI(ret);
+		if (myDet->isMultiSlsDetectorClass() && r != NULL)
+			delete [] r;
 	} else if (cmd=="detsizechan") {
 		sprintf(ans,"%d %d",myDet->getMaxNumberOfChannelsPerDetector(X),myDet->getMaxNumberOfChannelsPerDetector(Y));
 		return string(ans);
@@ -6995,7 +6997,8 @@ string slsDetectorCommand::cmdPattern(int narg, char *args[], int action) {
 			}
 		}
 		os << hex << reg << dec;
-
+		if (myDet->isMultiSlsDetectorClass() && aa != NULL)
+			delete [] aa;
 
 		//os <<" "<< hex << myDet->readRegister(120) << dec;
 
diff --git a/slsDetectorSoftware/slsDetector/slsDetectorUsers.cpp b/slsDetectorSoftware/slsDetector/slsDetectorUsers.cpp
index b76d9da18..e4bb9026c 100644
--- a/slsDetectorSoftware/slsDetector/slsDetectorUsers.cpp
+++ b/slsDetectorSoftware/slsDetector/slsDetectorUsers.cpp
@@ -115,17 +115,37 @@ int slsDetectorUsers::getPositions(double *pos){
 }
 
 int slsDetectorUsers::setDetectorSize(int x0, int y0, int nx, int ny){
-  if(myDetector->getTotalNumberOfChannels(slsDetectorDefs::Y)>1)
-	return 1;
-  int nmod=nx/(myDetector->getChansPerMod(0));
-  cout << myDetector->getChansPerMod(0) << " " << nx << " " << nmod << endl;
-  return myDetector->setNumberOfModules(nmod)*myDetector->getChansPerMod(0);}
+	// only one roi
+	slsDetectorDefs::ROI roi[1];
+	roi[0].xmin = x0;
+	roi[0].ymin = y0;
+	roi[0].xmax = x0 + nx;
+	roi[0].ymax = y0 + ny;
+	return myDetector->setROI(1, roi);
+}
 
 int slsDetectorUsers::getDetectorSize(int &x0, int &y0, int &nx, int &ny){ 
-  y0=0; 
-  x0=0; 
-  nx=myDetector->getTotalNumberOfChannels(slsDetectorDefs::X);
-  ny=myDetector->getTotalNumberOfChannels(slsDetectorDefs::Y);
+	int n = 0;
+	slsDetectorDefs::ROI* roi = myDetector->getROI(n);
+
+	// roi
+	if (roi != NULL && n > 0) {
+		x0 = roi[0].xmin;
+		y0 = roi[0].ymin;
+		nx = roi[0].xmax - roi[0].xmin;
+		ny = roi[0].ymax - roi[0].ymin;
+	}
+	// no roi
+	else {
+		  y0=0;
+		  x0=0;
+		  nx=myDetector->getTotalNumberOfChannels(slsDetectorDefs::X);
+		  ny=myDetector->getTotalNumberOfChannels(slsDetectorDefs::Y);
+	}
+
+	if (roi != NULL)
+		delete [] roi;
+
   return nx*ny;
 }
 
diff --git a/slsDetectorSoftware/slsDetector/slsDetectorUsers.h b/slsDetectorSoftware/slsDetector/slsDetectorUsers.h
index f9976a70b..9a0f1a5a8 100644
--- a/slsDetectorSoftware/slsDetector/slsDetectorUsers.h
+++ b/slsDetectorSoftware/slsDetector/slsDetectorUsers.h
@@ -247,7 +247,7 @@ class slsDetectorUsers
    int getPositions(double *pos=NULL);
   
   /**
-     @short sets the detector size
+     @short sets the detector size (only 1 ROI) (not Mythen supported anymore)
      \param x0 horizontal position origin in channel number (-1 unchanged)
      \param y0 vertical position origin in channel number (-1 unchanged)
      \param nx number of channels in horiziontal  (-1 unchanged)
@@ -258,12 +258,12 @@ class slsDetectorUsers
 
 
   /**
-     @short gets detector size
+     @short gets detector size (not Mythen supported anymore)
      \param x0 horizontal position origin in channel number 
      \param y0 vertical position origin in channel number 
      \param nx number of channels in horiziontal
      \param  ny number of channels in vertical 
-     \returns OK/FAIL
+     \returns total number of channels
   */
    int getDetectorSize(int &x0, int &y0, int &nx, int &ny);
   /**