Hi, I've written the following test file: ====================== \setupcolors[state=start] \setuppagenumbering[state=stop] \setupinteraction [state=start] \starttext \MPdrawingdonetrue \startMPdrawing draw (0,0)--(2cm,2cm); \stopMPdrawing \definesymbol[aa][\getMPdrawing] \startMPdrawing draw (2cm,2cm)--(2cm,0); \stopMPdrawing \definesymbol[bb][\getMPdrawing] \startMPdrawing draw (0,0)--(2cm,0); \stopMPdrawing \definesymbol[cc][\getMPdrawing] \definefieldstack[somemap][aa,bb,cc][height=fit,width=fit,frame=on] \fieldstack[somemap] \goto{here} [JS(Walk_Field{somemap})] \stoptext ====================== It seems that the fieldstack does not work. Is there anything wrong? -- Best Regards Chen ---------------------------------------------------------------- Zhi-chu Chen | Shanghai Synchrotron Radiation Facility No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China tel: 086 21 5955 3405 | zhichu.chen.googlepages.com | www.sinap.ac.cn ----------------------------------------------------------------