i find the problem is the "abc.lua" 's decode is utf8 with bom, it seems that the zerobrane can not process it, after i convert the decode of abc.lua, everything is ok. thanks for you help 在2013年04月11 10时16分,"sssa2000"<sssa2000@xxxxxxx>写道: thank u~ i wnat to "include" the "abc.lua", so i can call some function in "abc.lua", 在2013年04月11 03时28分,"Paul K"<paul@xxxxxxxxxxxxx>写道: What exactly did you expect? Was the content of "abc.lua" executed? If you wanted to step into the file, then you should check this answer: http://studio.zerobrane.com/doc-faq.html#why_stepping_into_function_calls_doesnt_work_in_some_cases Paul. On Wed, Apr 10, 2013 at 12:04 PM, sssa2000 <sssa2000@xxxxxxx> wrote: when i use dofile("abc.lua"),and i press "F5" the zerobrane echo this: Debugging session completed (traced 2 instructions). Program completed in 3.29 seconds (pid: 6664). the same progarme use decoda is runing ok