Dear Zhichu and Aditya, Thank you for the solution.
label (textext("$z_{" & decimal (i) & "}$" ), z[i]) ; is working well. Best regards, Dalyoung ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________