diff --git a/slsDetectorSoftware/slsDetector/slsDetectorCommand.cpp b/slsDetectorSoftware/slsDetector/slsDetectorCommand.cpp
index 398c937f9..73e6451a6 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 (r != NULL)
+            delete [] r;
 	} else if (cmd=="detsizechan") {
 		sprintf(ans,"%d %d",myDet->getMaxNumberOfChannelsPerDetector(X),myDet->getMaxNumberOfChannelsPerDetector(Y));
 		return string(ans);
@@ -6995,6 +6997,8 @@ string slsDetectorCommand::cmdPattern(int narg, char *args[], int action) {
 			}
 		}
 		os << hex << reg << dec;
+		if (aa != NULL)
+		    delete [] aa;
 
 
 		//os <<" "<< hex << myDet->readRegister(120) << dec;
diff --git a/slsDetectorSoftware/slsDetector/slsDetectorUsers.cpp b/slsDetectorSoftware/slsDetector/slsDetectorUsers.cpp
index b1603a297..c55826799 100644
--- a/slsDetectorSoftware/slsDetector/slsDetectorUsers.cpp
+++ b/slsDetectorSoftware/slsDetector/slsDetectorUsers.cpp
@@ -115,18 +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);
-  return nx*ny;
+    // default (no roi)
+    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;
+    }
+
+    if (roi != NULL)
+        delete [] roi;
+
+    return nx*ny;
 }
 
 int slsDetectorUsers::getMaximumDetectorSize(int &nx, int &ny){
diff --git a/slsDetectorSoftware/slsDetector/slsDetectorUsers.h b/slsDetectorSoftware/slsDetector/slsDetectorUsers.h
index 9caabda25..44fd5ebad 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)
      \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)
@@ -263,7 +263,7 @@ class slsDetectorUsers
      \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);
   /**