看图不说话，一切都是为了满足用户的需求。
核心的代码
field.tcibd001.csig: | ns
before.display:
select tcibd001.csig
from tcibd001
where tcibd001._index1 = {:tibom010.sitm}
as set with 1 rows
selectdo
tcibd001.csig = tcibd001.csig
selectempty
tcibd001.csig = ""
endselect | ne
