diff --git a/msi.gama.core/src/msi/gama/common/interfaces/IGui.java b/msi.gama.core/src/msi/gama/common/interfaces/IGui.java
index e1150eebf6..587821cee7 100644
--- a/msi.gama.core/src/msi/gama/common/interfaces/IGui.java
+++ b/msi.gama.core/src/msi/gama/common/interfaces/IGui.java
@@ -99,6 +99,9 @@ public interface IGui {
 
 	Map<String, Object> openUserInputDialog(IScope scope, String title, List<IParameter> parameters, GamaFont font);
 
+	public Boolean openUserInputDialogConfirm(final IScope scope, final String title,final String message) ;
+	
+		
 	void openUserControlPanel(IScope scope, UserPanelStatement panel);
 
 	void closeDialogs(IScope scope);
diff --git a/msi.gama.core/src/msi/gama/runtime/HeadlessListener.java b/msi.gama.core/src/msi/gama/runtime/HeadlessListener.java
index 30a7ae5b83..9b3282afc0 100644
--- a/msi.gama.core/src/msi/gama/runtime/HeadlessListener.java
+++ b/msi.gama.core/src/msi/gama/runtime/HeadlessListener.java
@@ -10,6 +10,7 @@
  ********************************************************************************************************/
 package msi.gama.runtime;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
@@ -80,6 +81,11 @@ public Map<String, Object> openUserInputDialog(final IScope scope, final String
 		});
 		return initialValues;
 	}
+	
+	@Override
+	public Boolean openUserInputDialogConfirm(final IScope scope, final String title,final String message) {
+		return true;
+	}
 
 	// See #2996: simplification of the logging done in this class
 	// public void registerJob(final BufferedWriter w) {
diff --git a/msi.gama.core/src/msi/gaml/operators/System.java b/msi.gama.core/src/msi/gaml/operators/System.java
index b1e31b7f89..8e54a57321 100644
--- a/msi.gama.core/src/msi/gaml/operators/System.java
+++ b/msi.gama.core/src/msi/gaml/operators/System.java
@@ -273,6 +273,20 @@ public static IMap<String, Object> userInput(final IScope scope, final String ti
 		});
 		return userInput(scope, title, parameters,font);
 	}
+	
+	@operator (
+			value = IKeyword.USER_CONFIRM,
+			category = { IOperatorCategory.SYSTEM, IOperatorCategory.USER_CONTROL },
+			concept = {})
+	@doc (
+			value = "Asks the user to confirm a choice. The two string are used to specify the title and the message of the dialog box. ",
+			examples =
+
+			{ @example ("bool confirm <- user_confirm(\"Confirm\",\"Please confirm\";") })
+	@no_test
+	public static Boolean userConfirmDialog(final IScope scope, final String title, final String message) {
+		return scope.getGui().openUserInputDialogConfirm(scope, title,message);
+	}
 
 	@SuppressWarnings ("unchecked")
 	@operator (
diff --git a/ummisco.gama.annotations/src/msi/gama/common/interfaces/IKeyword.java b/ummisco.gama.annotations/src/msi/gama/common/interfaces/IKeyword.java
index 79098cc54d..af9178e40f 100644
--- a/ummisco.gama.annotations/src/msi/gama/common/interfaces/IKeyword.java
+++ b/ummisco.gama.annotations/src/msi/gama/common/interfaces/IKeyword.java
@@ -431,6 +431,7 @@ public interface IKeyword {
 	String USER_CONTROLLED = "user_controlled";
 	String USER_COMMAND = "user_command";
 	String USER_INPUT = "user_input";
+	String USER_CONFIRM = "user_confirm";
 	String USER_ONLY = "user_only";
 	String USER_FIRST = "user_first";
 	String USER_LAST = "user_last";
diff --git a/ummisco.gama.ui.shared/src/ummisco/gama/ui/utils/SwtGui.java b/ummisco.gama.ui.shared/src/ummisco/gama/ui/utils/SwtGui.java
index a4612a6182..153060cf5e 100644
--- a/ummisco.gama.ui.shared/src/ummisco/gama/ui/utils/SwtGui.java
+++ b/ummisco.gama.ui.shared/src/ummisco/gama/ui/utils/SwtGui.java
@@ -15,6 +15,7 @@
 import java.util.List;
 import java.util.Map;
 
+import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.dnd.Clipboard;
 import org.eclipse.swt.dnd.TextTransfer;
@@ -278,6 +279,15 @@ public Map<String, Object> openUserInputDialog(final IScope scope, final String
 		});
 		return result;
 	}
+	
+	@Override
+	public Boolean openUserInputDialogConfirm(final IScope scope, final String title,final String message) {
+		final List<Boolean> result = new ArrayList<>();	
+		WorkbenchHelper.run(() -> {
+			result.add(MessageDialog.openConfirm(WorkbenchHelper.getShell(), title, message));
+		});
+		return result.isEmpty() ? false : result.get(0);
+	}
 
 	@Override
 	public void openUserControlPanel(final IScope scope, final UserPanelStatement panel) {