To no avail . . .

[Archangel]

Hi Everyone,
This is my first use of a 12F675, and I used some of Bruces code, to BCD control the time period from a lookup table and it works really well. I am using his code to control LED off time, But I am trying to control on time using IF / THEN loops and the code simply ignores the IF / THEN loop as if it simply said 250. If I substitute a number in the B0 variables place it uses that number. Anyone have an idea why the IF/Then loop has no effect? I have moved it around within the code to no avail.
Thank You
JS

@ __config _INTRC_OSC_NOCLKOUT & _WDT_OFF & _MCLRE_OFF & _CP_OFF 

 PCON = %00000011       ' BOD off, No POR flag set
DEFINE  NO_CLRWDT 1
    OSCCAL = %1111100   ' 
    CMCON   = 7	        ' disable analog comparators
    ANSEL   = 0         ' disable A/D module, all digital
    WPU.4 = 0           ' disable weak pull up on GPIO.4
    B0    VAR BYTE
    X     VAR WORD
    
    Index VAR BYTE
    
    LED   VAR GPIO.5    
    
    TRISIO = %00011111   ' RA0 to RA3 inputs for DIP switch
    
    OPTION_REG = %11111111

    

    
Main:  
     IF (GPIO.4 = 1) THEN
  B0 = 2500
else
  B0 = 250
  endif    
  
    Index = GPIO & $0F   ' Read DIP switch AND mask result
    LOOKUP2 Index,[200,300,400,500,600,700,800,900,1000,2000,_
    3000,4000,5000,6000,7000,8000],X
    
    
    HIGH LED
    PAUSE b0
    LOW LED
    PAUSE X
    
GOTO Main

    END
    POKECODE @$3FF, $50  ' reintroduces osscal correction data