I wrote a small program , mostly copied it from one of the post here. it works but the frequency it gives me is 2,2kHz when I program 500hz, I am doing a HPWM: using picF88.
can someone help me?

INCLUDE "modedefs.bas"
@ DEVICE PIC16F88 , HS_OSC , WDT_OFF , PWRT_ON , BOD_ON , LVP_OFF , PROTECT_OFF, CCPMX_OFF
'HS 20mhz, watchdog off, powerup timer on, mclr external, brown out detect on, low volt program off , code protect off
DEFINE OSC 20 'use external 20mhz crystal
PAUSE 100 ' start-up delay
TRISB=0
DEFINE CCP1_REG PORTB
DEFINE CCP1_BIT 3
HPWM 1,127,500
HERE: GOTO HERE
end