Creating a PWM signal using PIC18F4520

I am trying to create a 100ms period pwm signal (10Hz) with a PIC18F4520, I followed the PR2 equation to help me create this signal

I have a 20MHz clock frequency with a prescaler of 16 and a PWM period of (100 x 10^-3 s) and when I use these values in this equation:

$ Large PR2 = ( frac{PWM Period}{( TOsc times 4 times TMR2 Prescaler )} ) – 1 $

I get 0x31249

I am also trying to run this PWM signal at 50% duty cycle [so 50ms off and 50ms on] by using the duty cycle equation:

Duty Cycle = ((CCPR1L << 7 ) | (CCP1CON bits <5:4>) ) $ times $ TOSC in MHz $ times $ Prescale

Which gives 62500 as a value for the duty cycle.

This whole exercise is for me to learn better about using PWM signals. I am programming the PIC in C18 and simulating it on PROTEUS VSM.

that is a picture of what the oscilloscope is picking up off the PWM signal which DOES NOT LOOK LIKE 50% duty cycle or 10 Hz frequency.

This is the code that I am using on PROTEUS VSM:

include p18cxxx.h           
include pwm.h                   
include timers.h                
pragma config OSC = HS          
pragma config MCLRE = ON             
pragma config WDT = OFF         
pragma config LVP = OFF          
pragma config DEBUG = OFF       
pragma config PBADEN = OFF          
unsigned char period = 0x31249;         // assign PR2 to 31249 used to get 100ms period

unsigned int duty_cycle = 62500;  // used to get 50ms on/off

void main(void)
{ 

    OpenTimer2(TIMER_INT_OFF & T2_PS_1_16 & T2_POST_1_1); 

    OpenPWM1 (period);              

    SetDCPWM1 (duty_cycle);         

    while (1);

} 

As it can be seen I am using the PWM library as I heard it was easier to work with.

I am sorry if I appear too unacquainted with how questions are made on this forum or as to how I presented my problem.