Optional. The name of the set of slots inside the bar (Default is "SKILL SLOTS").
Required. The name of the 1st slot.
Required. (Skill 1 Level) The value of the progress bar (from 0 to 1000) for the 1st slot. An X number will be shown as "X/1000". If 1000 it will give "Completed". If a non-numeric phrase is written, the progress bar won't advance.
Optional. The name of the 2nd slot.
Optional. (Skill 2 Level) The value of the progress bar for the 2nd slot. It works in the same way as "Skill1Lvl".
For each slot (e.g. Skill9) a value (e.g. Skill9Lvl) should be provided, but it's optional.