MSF: Up & Down Modulation Button

[Hexspa]

Hi. The Up & Down button in the MOD popup says that it'll take a 0-to-50 value and turn it into +-25. However, if I set an LFO to volume and enable UP & Down, it makes the effect go from +50 to -50 - double the amount I expect based on the description.

Also, when I change the Level amount from the LFO window (and Up & Down is engaged), that simply controls the weighting of the LFO. In other words, with 100% LFO Level (from LFO window), and Up & Down engaged, you get the behavior I described in the previous paragraph (this time at 100%). If you lower the LFO Level knob to 50%, the effect changes from -100 to 0%. That is to say, the effect is not centered at 0 (middle) but, in fact, it seems to be neutralizing the first half of the LFO. If I turn LFO Level to 0, but the LFO 1 amount is set to 100%, the red line stays at -100 (fully left). If I put the LFO Level to 200%, the red bar swings fully left and right but seems more weighted toward the right.

Lastly, for the MOD window Depth knob, at 50%, it says 'max 12.0 dB' for my target. When Up & Down is disengaged, that max value stays the same whether the Depth knob is at 50% through 100%. However, when Up & Down is engaged, the effect of the output increases when the Depth knob is above 50%.

All of this is simply not expected behavior. Maybe I am misunderstanding the operations. I guess I expect the Up & Down feature to act like the LFO Bipolar button (which, by the way, does not have an F1/Help popup nor is it listed in the '?' menu). Does anyone have anything to say about this? Is this Up & Down button broken?

EDIT: what I had written about the additive levels at silence doesn't make total sense (I'm writing over it). I was saying that when an additive harmonic is set to 'silence', the modulation should be bypassed. I realize now that this isn't great. Maybe an option but I can see why modulation should be able to bring the level to audible.

Thanks.

[MeldaProduction]

Aaaah, you are right, the help is a little buggy. It doubles the range.

[Hexspa]

Thank you.