Replacing X Result with Y Result when rolling

Hi all, just a quick question: Setting up for a 4e game, and one of my players is playing a Monk. I'm rolling up magic items and found the "Devastating Ki Focus". The item makes it so whenever you roll damage, if the result is 1 or 2, you instead treat it as a 3. Not sure how to code this in Roll20, if you even can. I've done rerolls and "reroll until you get above X" but this one's a new issue for me. Any help would be appreciated!

It can be a little clunky but one way to do a d6 with a minimum of 3 would be { 1d6 + { {3} } }k1 To handle more dice, such as 2d4, it would have to be altered as { 2d4 + { {3} } + { {3} } }k2 An alternative is to use a rollable table with entries for each possible value for a given die, with the value of 3 having a weight of 3 and remaining values a weight of 1. You would have to create a table per die size you needed though. There is an open suggestion for a custom dice syntax that would make make such a roll trivial so consider voting for it.

This works perfectly thanks!