Joint not connected to weight painting

[adildermawan14]

why this joint doesn't appear on the weight painting liwhy is this joint not showing up on the weight painting list, I can't make the mouth open. I've tried to connect by styling on the outliner but it still doesn't show up, I've unbind the skin and made a new joint on the jaw but it still doesn't show up 😞 please help me.st, I can't make the mouth open. i 

[mspeer]

Hi!

Please check your settings for Skin > Bind Skin.

Maybe try Edit  > Reset Settings and then try it again.

You can also add a joint at any time later by using:

Skin > Edit Influences > Add Influence.