Yes, values are 1 and 0 respectively...I entered this in the Javascript boxU-Check.#subform[0].Ucheck::change - (FormCalc, client)if (this.rawValue == 1){UStamp.presence= "visible"}else {UStamp.presence= "hidden"}What I get now isScript failed (language is formcalc; context isxfa[0].form[0].U-Check[...