Hello, while trying to create some interactive forms using latest beta (MkIV), I found that JavaScripts are only then copied into the PDF, if there’s a \goto referencing a JS function. According to the old widgets manual I thought I could set default values of fields calling JS functions or variables as [JS(MyFunc)], but that doesn’t work. \starttext \setupinteraction [state=start] \startJSpreamble{formtest} % this JS code is only copied to the PDF if the \goto below is uncommented! var d = new Date(); var df = this.getField("Datum"); var CurDate = util.printd("dd.mm.yyyy", d); df.value = CurDate; function toggleField(){ var f = this.getField("Datum"); f.display = ! f.display; } \stopJSpreamble %\goto{toggle}[JS(toggleField)] \blank \setupfield[MMshortString][reset,horizontal][height=5mm, width=50mm, frame=off, bottomframe=on] \definefield[Datum][line][MMshortString][][JS(CurDate)] % JS(CurDate) ends up verbatim in the field Date: \field[Datum] \stoptext Greetlings, Hraban --- http://www.fiee.net http://wiki.contextgarden.net https://www.cacert.org (I'm an assurer)