Need to add a Spellcasting Ability Modifier Dnd 5e

So my DM is using the DnD 5E sheet, and I'm playing a druid with the Staff of Woodlands. She's level 13, so +5 proficiency and +5 wisdom modifier for +10 overall spellcasting ability. The Staff grants a +2 spellcasting ability modifier for a total of +12, but I can't find a way to add this modifier. I manually changed spell_attack_bonus in Attributes & Abilities to 12, but when I click my attacks Roll20 still rolls with the original +10 and not the adjustment. Any help is appreciated. Thank you!

Did you see the Spell Save DC Mod setting in the Character Settings (cog wheel tab, left-most column, top-most section)?

I did but that only affected the Spell Save DC not the Spellcasting ability. I did however find "Global Magic Attack Modifier" right above it and that did the trick, thank you!