[NTG-context] Variable name in lua and lmtx

Hi Hans, While testing the new LuaMetaTeX with an old project, I noticed that lmtx crashed when I had variables named « numéro » and « prénom » as in local n, numéro, email, Nom, prénom When I changed these to local n, numero, email, Nom, prenom the file was typeset without problem. So my question is: should one avoid using UTF characters in variable names now? Thanks in advance for your attention. Best regards: OK