I'am new to Starfinder, i am trying to setup the PC characters in Roll20 but i have problems with the items like Serum of Healing. I have figured out how to add mods to armor and weapons but i struggle with stuff like healing serum. The serum has 1d8 to hp, i have added a new item in equipment and have played around with mod but i have no clue how to configure it that on click a roll action happens. The documentation for the sheet isn't that detailed so i hope you guys can point me in the right direction. Thank you