这个提示是什么原因造成的呢？

滕小辉

KILL code number        Overlay number    Nearby statement number
   422                          1                         0
) w, C) O' @) f' l/ o5 O. vKILL = 422.  
( k" |% H1 H9 m/ F  w* E! H7 M  ^The present statement is interpreted as a value assignment statement, and the preceding name is interpreted as a variable to which a value is being assigned.  The identification of this variable is interpreted as complete, and should now be followed by ":=",in the following format: variable_identification := expression