Hi,to better understand the xfa.layout.y()-function I put this code into the calculate event of a checkbox:console.show();console.println("Calculate: Checkbox-y: " + xfa.layout.y(this, "in") + " Checkbox-Subform-y: " + xfa.layout.y(this.parent, "in") + " and content-y: " + xfa.layout.y(th...