Joint properties

Could someone help me answer how to use Value Expression?I don’t know what “-1*VALUE“ means.
Thanks in advance!
Show in the picture.
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Hy,

inversion of the sign of the value.

Regards
Feature

Hello cap,
Thank you!
But what is the role of the inverse of Value。

Hy,

if the link drives in the wrong direktion this is one possible way to invert the direction! → One other way is to change the direction of the link itself instead of inverting the value…

Regards
Feature

How to define the expression of Joint and Pivot in custom joint type?
Are there links to related courses?
Thank you very much!

Thank you very much!
Is there a link to related courses? I can not find it.

Hy,

it’s mathematic and the equation depends on the problem to solve… → So I don’t think that there is a course cause every kinematic needs another solution!

Regards
Feature

OK,Thank you very much!