Hi all I need help with 12c508, i am loosing it

I have a 12f508 and trying initialize it

every think works except the GP2 pin
i need it to work as an out put. but it just doesnt work . I have
tried everything. I think it is somthing to do with the timer0 but i
dont know what.

anyways this is how i have initialized it.

#include <12c508A.h>
#fuses     INTRC,NOWDT,NOPROTECT,NOMCLR
#use     delay(clock = 4000000)
#use     fast_io(B)
void main()
{
    int8 turnoffdelay = shutdwn_delay_min;    //shutdown delay variable
    int8 MainPower_off;
    int1 pinstatus;                //stores the GP0 status
    int1 toggle;
        set_tris_B(0x29);            
    output_B(0x00);

PLS HElp I WILL REALY APRECIATE IT
Thanks Nadeem