FOR sequence is skipped

Hello. I wrote this piece of code to test PBP:

Code:

---

Start:
        YellowLED VAR PORTB.0
        RedLED VAR PORTB.1
        t VAR BYTE
        WH VAR BYTE

        High  CMCON.0
        High  CMCON.1
        High  CMCON.2

        HIGH  STATUS.0
        TRISB = %00000000
        TRISA = %00000000
        Low  STATUS.0
        High  YellowLED        ;LED Starting sequence
        High  RedLED
        PAUSE  2000
        Low  YellowLED
        Low  RedLED
        PAUSE  2000
       
       
        FOR        t=20000 TO 250 STEP - 1
                High        RedLED
                PAUSE        100
                        FOR        WH=0 TO 2000 STEP 1
                        PAUSE  20
                        High        YellowLED
                        PAUSE        100
                        Low        YellowLED
                NEXT WH
                Low        RedLED
        NEXT t

GO:
        High  RedLED
        High  YellowLED
        PAUSE  500
        Low  RedLED
        Low  YellowLED
        PAUSE  500
        GOTO  GO

---

Unfortunately it acts as if there is no "FOR" present. So what it does is the following:

Code:

---


Start:
        YellowLED VAR PORTB.0
        RedLED VAR PORTB.1
        t VAR BYTE
        WH VAR BYTE

        High  CMCON.0
        High  CMCON.1
        High  CMCON.2

        HIGH  STATUS.0
        TRISB = %00000000
        TRISA = %00000000
        Low  STATUS.0
        High  YellowLED        ;LED Starting sequence
        High  RedLED
        PAUSE  2000
        Low  YellowLED
        Low  RedLED
        PAUSE  2000

GO:
        High  RedLED
        High  YellowLED
        PAUSE  500
        Low  RedLED
        Low  YellowLED
        PAUSE  500
        GOTO  GO

---

How to solve this ?

try making t and wh word sized variables

it works thank you

Inn addition to Steve's,

also consider this:

Code:

---

FOR t=2000 TO 25 STEP - 1

......

next t

---

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Okay. Thank you.