i have a implement c file can't pass compiling process,and more trouble,i can't identify the
error source.

following is the code till the line where keil c51
prompts me there is an syntax error (the last line).
---------------------------------------------------

#include "reg1210.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "Timer.h"
#include "ADC.h"
#include "DataStruct.h"

#define low 0
#define high 1
#define Enable 0
#define Disable 1
#define SET 1
#define CLEAR 0
#define s 10
#define OneUE 475.308

sbit LowUpSel = P2^7; // line 20

-------------------------------------------------
following is the error message:

ADC.C(20): error C141: syntax error near 'sbit'


can anyone help me out or just give me some hint?
any ideas is appreciate!