Use the field/slider to specify the percentile z used in the Include rows with Percentile satisfying this expression filter.A value of 75% has been specified by default.Note: This field is not active unless an expression has been entered in the Include rows with Percentile satisfying this expression filter.Tip: To change the scale of the slider, right-click on the slider and select from the pop-up menu. Change the upper and/or lower boundaries in the window that appears, to rescale the slider and click .