Thank you very much for your help ,Richard !
I made the changes, but now CCPR1L = 0

Code:
Define  OSC 4
OSCCON = %01101010   'sets the internal oscillator to 4Mhz

DEFINE ADC_BITS 8
DEFINE ADC_CLOCK 3
DEFINE ADC_SAMPLEUS 100 

ADCON0 = %00000000    
ADCON1 = %00000011     
FVRCON = %10000010     'voltage reference set  to 2.048V 
CM1CON0 = 0   ' COMPARATORS OFF
CM1CON1 = 0
CM2CON0 = 0   ' COMPARATORS OFF
CM2CON1 = 0    
CPSCON0 = 0   'CAPACTIVE SENSE MODULE OFF
RCSTA.7 = 0   'SERIAL PORT OFF
'APFCON0 = %10000000
'APFCON1 = %00001010
'APFCON1.3 = 1 
TRISA =  %00000011
TRISB =  %00000000 
TRISC =  %00000100 ' PORTC.2 input    
ANSELA = %00000011
ANSELB = %00000000
ANSELC = %00000100 ' ANALOG INPUT AN6

OPTION_REG.7 = 1 ' disable WPU
WPUA =  %00000000
WPUB =  %00000000
WPUC =  %00000000
porta = 0
portb = 0
portc = 0 

inh1    var  portc.4
inh2    var  portc.0

adval  var byte
duty1  var byte
duty2  var byte

duty1 = 0 
          
t2con=4
PR2 = 255
ccp1con=16

pause 200
'========================PROGRAM=============================
main:
adcin 6 , adval 
pause 10

CCPR1L = adval            ;set pwm
duty1 = adval

hpwm 2 , duty1, 2000 

high inh1
high inh2

goto main
end
'=============================================================