Using the 5e Character sheets for reference. If I change the Core Die Roll then attributes, skills etc all add their respective modifiers correctly; but if the Core Die Roll includes math & the character tries rolling an attack then Roll20 seems to just ignore ALL modifiers that should be included in the roll. Example rolling fireball with d210 as Core Die Roll Screenshots failed to be included in the post, I typed the output by hand instead. Rolling 2d10cs>20 + 3[INT] + 2[PROF] = (6+8)+2+3 Example rolling fireball with d4+d17-1 as Core Die Roll Rolling d4+d17-1cs>20 + 3[INT] + 2[PROF] = (3)+(12)-1 Note how in the final calculation "3[INT] + 2[PROF]" doesn't get translated in the final calculation.