I know you said you were still working on the interface in the other thread so we might not be here yet, but are the results of sheetrolls going to be modifiable with dice or just flat modifiers? I know you noted the need to add temporary modifiers in one of the original dice threads about the Baldr roller, but for example Bless in 5e adds 1d4 to some types of rolls, so you'd want to do Skillname (or Attack etc) + 1d4(+etc.)
Also, are the existing rolls in the spreadsheet from anywhere real or is it just pseudocode when it says for example:
I ask as if it's a valid sheetroll string I'd be curious what else there is available for the sheetroll roll syntax (conditional/ternary type operations?) - I haven't seen (or found) anything before saying other things beyond the given dice rolling functions would work (not that I know how sheets work) but that's pretty cool if any do!