If you have + value (i.e. +2), then you would add it to your roll.
Example: You try to dodge a collapsing ceiling. DN sets Chance Target Number (TN) to 15.
You roll d20 (13) + Dex bonus (+2) = 15. You met the TN and succeeded.
If you have + value (i.e. +2), then you would add it to your roll.
Example: You try to dodge a collapsing ceiling. DN sets Chance Target Number (TN) to 15.
You roll d20 (13) + Dex bonus (+2) = 15. You met the TN and succeeded.