diff --git a/contrib/mobile/iOS/Onelab/PostProcessingViewController.h b/contrib/mobile/iOS/Onelab/PostProcessingViewController.h
index 8baa6b816100969a8336d235c9584f454867d79c..86091738b528ed4d69c2cf5d39e95e23a9f19183 100644
--- a/contrib/mobile/iOS/Onelab/PostProcessingViewController.h
+++ b/contrib/mobile/iOS/Onelab/PostProcessingViewController.h
@@ -21,8 +21,11 @@
 @property (weak, nonatomic) IBOutlet UILabel *Name;
 @property (weak, nonatomic) IBOutlet UIPickerView *IntervalsType;
 @property (weak, nonatomic) IBOutlet UITextField *Intervals;
+@property (weak, nonatomic) IBOutlet UIStepper *IntervalsStepper;
 @property (weak, nonatomic) IBOutlet UISlider *RaiseZ;
 
+- (IBAction)stepperValueChanged:(UIStepper *)sender;
+
 - (void)setPView:(PView*)p;
 
 @end