How to make a macro to reroll on 1's and 2's, but only once?

Hi guys, Been in need of a macro to reroll 1's and 2's, and found that /roll 2d6<2 rerolls 1's and 2's, but indefinitely. Is there any way to do so it only rolls a 1 or 2 once and takes the second result?

Yup. From the Roll20 Wiki: Special Case: Reroll Once (B,F) roCP In some systems (such as D&D 5E) you want to reroll dice below a certain value, but you only want to reroll the dice one time each. To do that, just use ro instead of r . Example Reroll Once Rolls 2d10ro<2 - Roll 2 d10's and reroll any time a 2 or lower is rolled, but only up to one time per dice.

I looked over the wiki when it came to macros, but must've missed it! Thanks a ton : )