Open Ended (Exploding Dice) when rolling low?

I am playing with some mates and our system uses d100 rolls with open ended high/low rolls for most things...

Open ended high is triggered on 96-100 ( you keep rolling d100 for each roll 96 or over and add the total)
I can get this to work using /roll d100!>96

Open ended low is triggered on a roll of 1-5 ( this triggers a negative result, d100 is subtracted from your total, however the d100 roll at this point also is open ended). For example you roll a 2, this triggers the negative result then roll a 96 you reroll a second time and get 10. Total is -108.

My question is how can we account for the open ended low?

can this be done in a macro? /roll command? API etc?

cheers :-)

I think that will require the use of the API for the rollers are setup to do explode when you roll over only. I could be wrong so take what I said with a grain of salt.

according to https://wiki.roll20.net/Dice_Reference
"3d6!>5 - Rolls 3d6 and explodes every time a 5 or 6 is rolled"

I see nothing saying !< is a valide command

And p., the section you quoted it just an example and is not the complete text. Here is the section that states that !< is a valid command: https://wiki.roll20.net/Dice_Reference#Exploding_Dice

And the quote (bolding mine):
"To perform a roll with exploding dice, just add an exclamation point after the number of sides in the formula. For example, /roll 3d6! would roll 3 d6 dice with exploding re-rolls. You can also define the exploding point for the dice using the greater-than and less-than symbols. For example, /roll 3d6!>4 would explode on any dice greater-than or equal-to 4. /roll 3d6!3 would explode only if a 3 is rolled."

I thought I was wrong on this and glad Gauss dropped by to clear things up.