See Why you no update stock bottom?
There appear to be some really cool values and shortcuts available such as the “t” variable for thickness that are not apparent in the dialogue window. May I suggest a common UX element for future versions (?) next to elements that could have more than just a numerical value. This would pop up a window to give examples of numerical values, math expressions and internal variables that can be used.
Thanks for great software! This feature could help new users to find the awesome work that you have already created.