Hi, \def\scrn_fieldstack_add#tag#settings#symbol% {\advance\scratchcounter\plusone \edef\currentfieldstackname{#tag:\number\scratchcounter}% - \ifnum\scratchcounter=\ifnum\scratchcounter=\fieldcategoryparameter\c!start\relax + \ifnum\scratchcounter=\fieldcategoryparameter\c!start\relax \definefieldbody[\currentfieldstackname][\c!type=check,\c!values={#symbol,\empty},\c!default={#symbol}]% \else \definefieldbody[\currentfieldstackname][\c!type=check,\c!values={#symbol,\empty},\c!default=]% \fi \setbox\scrn_fieldstack_box\hbox{\symbol[#symbol]}% \setcollector [fieldstack] {\fieldbody [\currentfieldstackname] [\c!option=\v!readonly, \c!width=\wd\scrn_fieldstack_box, \c!height=\ht\scrn_fieldstack_box, \c!depth=\dp\scrn_fieldstack_box, #settings]}} Wolfgang