Hi all, so im trying to write a character sheet for a game me and a friend have made that uses the same modifier system as dnd. now the problem is i cannot get the html to work properly. this is the code i have, now it lets me add an attribute score but doesn't derive the value to create a modifier it just leaves a grayed out box <h3>Strength<input type="number" name="attr_Str"/> <input type="number" name="attr_StrMod" value="(@{Strength}/2-5)" disabled="true" /> </h3> i know this is basically copied from the wiki but i only the first line seems to work any help would be greatly appreciated