[NTG-context] \fieldstack with mkiv

Hello, What is needed to get \fieldstack working in mkiv? The following example works with mkii, but not with mkiv: \setupinteraction[state=start] \definesymbol[step1][AAA] \definesymbol[step2][BBB] \definefieldstack[test][step1, step2] \starttext \fieldstack[test] Just click \goto{here}[JS(Walk_Field{test})] to walk through the fieldstack! \goto{(restart)}[JS(Set_Field{test, 1})] \stoptext TIA for any hints! Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/