16LF1824 strange problem

[midali]

Something is strange. Now it work with the same variable in init and in main loops. Yesterday I tried a many time and don't worked.
@ richard : thx for your suggestions
Here is working code :

#CONFIG
        __CONFIG _CONFIG1, _FCMEN_OFF & _FOSC_INTOSC & _WDTE_OFF & _MCLRE_OFF & _CP_ON & _IESO_OFF & _BOREN_OFF & _PWRTE_OFF
        __CONFIG _CONFIG2, _PLLEN_OFF & _STVREN_OFF & _LVP_OFF
#ENDCONFIG

DEfine  OSC 4 
OSCCON = %01101010   'sets the internal oscillator to 4Mhz



ADCON0 = %00000000    
ADCON1 = %00000000     
FVRCON = %11000010     'turn fixed voltage reference on & set it to 2.048V (last two bits set the voltage ...01 =1.024V,10=2.048
CM1CON0 = 0   ' COMPARATORS OFF
CM1CON1 = 0
CM2CON0 = 0   ' COMPARATORS OFF
CM2CON1 = 0    
CPSCON0 = 0   'CAPACTIVE SENSE MODULE OFF
RCSTA.7  = 0   'SERIAL PORT OFF

TRISA   = %00000000
TRISC   = %00000100    
ANSELA = %00000000
ANSELC = %00000000

OPTION_REG.7 = 0
WPUA  =  %00000000

PORTA = 0
PORTC = 0 

Symbol front  = PORTA.4


x      var  byte
varb   var  byte
divf   var  byte

x        = 0
varb   = 0
divf    = 0

pause 100

init:
pulsin portc.2 , 1, varb
 if (varb < 140) or (varb > 160) then init
 pause 100
 pulsin portc.2 , 1, varb
 if (varb < 140) or (varb > 160) then init
 if (varb > 140) and (varb < 160) then goto beep
goto init

beep:      
hpwm 1 , 10, 3000
    high front
    pause 80
    low front
    pause 200
hpwm 1 , 5, 1200
    high front
    pause 80
    low front
    pause 200
hpwm 1 , 10, 3000
    high front
    pause 80
    low front
 

'************************************************************
main:
pulsin portc.2 , 1, varb
hpwm 1 , x, 1954 

'=======================miss signal=========================
if varb < 50 then
     varb = 150
     x=0
     low front
endif
'============================================================

'========================front===============================
if varb> 160  then
        high front
    if varb > 190 then varb = 190
        divf=255*(varb-160)/30
    if x > 255 then x = 255
    if divf > 255 then divf = 255            
    if divf >x then x=x+2
    if divf <x then x=x-6
endif
'============================================================

'==================== stay ==================================
if varb < 160 and varb > 140 then
    low front
    x= 0 
endif
'=============================================================

'==========================light==============================
if varb < 140 and varb > 50 then
     high PORTA.0
else
    low PORTA.0
endif
goto main
end