Negating a tag in an effect doesn't seem to work.

[flashgordon]

I am trying to implement Cringe, but am having trouble getting the damage penalty to work. I put the following in for the effect
DMG: [-LVL] - 1 circumstance

I have tried using [-LVL], [-CL], -[LVL] and -[CL], but none of these seem to get translated into anything. Using just [LVL] and [CL] do seem to work though.

[Trenloe]

Use: DMG: [-LVL]-1, circumstance