Changing the dice roll that is considered a critical failure

So I know that, using the OGL 5e character sheet, you can change the crit range of attacks - that is, the die roll at or above which the attack is considered a critical. My question is this: can you change the die roll at or below which the attack is considered a critical failure ? If so, how?

The dice parser does allow for this. See here:&nbsp; <a href="https://wiki.roll20.net/Dice_Reference#Critical_Su" rel="nofollow">https://wiki.roll20.net/Dice_Reference#Critical_Su</a>... Example: /roll 1d20cf&lt;3 will fumble on a 1, 2, or 3.

G G said: The dice parser does allow for this. See here:&nbsp; <a href="https://wiki.roll20.net/Dice_Reference#Critical_Su" rel="nofollow">https://wiki.roll20.net/Dice_Reference#Critical_Su</a>... Example: /roll 1d20cf&lt;3 will fumble on a 1, 2, or 3. Thanks, I had seen that, but I wanted to be able to apply it to the attack buttons on the character sheet. A friend of mine has popped up and found an answer and it is apparently to put 20cf&lt;n in the crit range box on the attack entry on the character sheet. Have confirmed that this works, so this thread can be closed.