I was looking around at the "mod" section in the D&D 5e character sheet, and noticed that you can (among other things) set the weapon to have a benefit to stats, or subtract from them. However, it doesn't seem like you can do anything beyond addition or subtraction. Division and multiplication (or really any symbols other than a minus sign) seem to be entirely ignored, and the numbers left over are added to the stat. So for example, if I wanted to add 20% of the current Dexterity value, I presumably would type "dexterity * 1.2". This instead is interpreted as "dexterity + 12" Is what I'm attempting impossible, or have I simply been using incorrect syntax? Is it not possible to divide, multiply, or handle any kind of decimal numbers when dealing with weapon modifiers?