Interrupts not shooting in mplab from high preloading

[maniac_xox]

I am using a PIC18F452 microcontroller in MPLAB X, everything is working great when I work on examples that require smaller or no preload at all, I do not understand why that is the case, is there a limit to the TMR0L?

Hello please help asap,

my specific case I have:

4MHz crystal -----> 1 / (4MHz / 4) = 1MHz timer

I Need to make interrupts happen after 4 seconds

1MHz * 4s = 4,000,000 counts

Therefore i decided to use a 16-bit with a 1:64 Prescaler setting.
4,000,000 / 64 = 62,500 counts

The difference would therefore be: 65,536 - 62,500 = 3,036 as preload

the problem arises when I use a breakpoint and stopwatch in MPLAB X IDE to know if the program stops at that specific time ( 4 seconds ) when I initialise the timer function, but the interrupt just never happens.

Any solution to this? it does not work in PROTEUS either, i have tried before understanding the reason being the preloading, after testing it out with different examples.

APPENDIX (code is in c language):

#include "LED.h"
#include "Timer.h"
#include "Button.h"

#define _XTAL_FREQ 4MHZ

void InitialiseTimer(void)         // 4 seconds TIMER
{
    T0CONbits.TMR0ON = 1;    //timer enabled
    T0CONbits.T08BIT = 0;       // 16-bit set
    T0CONbits.T0CS = 0;         // internal clock
    T0CONbits.T0SE = 1;         // high to low transition
    T0CONbits.PSA = 0;         // 1:64 prescale enabled (101)
    T0CONbits.T0PS2 = 1;
    T0CONbits.T0PS1 = 0;
    T0CONbits.T0PS0 = 1;
}

void main(void)
{
    InitialiseLED();                         // this is from another header file
    InitialiseTimer();
 
    while(1)                                 // loop to check every run stops at the same time ( 4 seconds)
    {
        if(TimerOverflow())
        {
            LEDToggle(LED1);
        } 
    } 
}