How to limit the Material node value like before in blender2.8?

auFzC

like this image,node group can made this before,but i can’t find this in 2.8…

Did I miss it…? I can’t find it :disappointed_relieved:

It is there. You just need to select an input in Inputs list.
It is a property of Input. If selected input is a color, you will not see value limits but a default color.
If selected input corresponds to a value, you will see that.

I select but there are nothing,i can’t set what i want Max or Min value.

or is blender 2.8 beta still not in this function?

That is same display in 2.79b until you start editing the nodegroup.
Press Tab key and you will see the Interface panel of the node with Inputs and Outputs lists.

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thank you!