How to set material bool parameter via blueprint?

[Galasdaer]

I have a mesh that assigned 4 materials. And each one has “Emissive?” boolean. How can i change that parameter via blueprint?

[XYZWNMM (みぞの)]

Hi !

Try one of the below!

▼ Replace bool parameter to sacalar parameter

Where is the Set Static SWITCH parameter for BP code (Dynamic Material Instance)?

(Edit: deleted confused previous explanation) The docs say this: The StaticSwitch expression works like a StaticSwitchParameter, except that it only implements the switch and does not create a parameter. So, you need a StaticSwitchParameter to be able to set something up, and then you can use this switch to choose one value or the other based on an input value such as that parameter. You might want to set these up as material instances, so you can create one instance with it “on” and one w…

▼ Implement Function for change bool parameter with C++ ( ↓ ※Please translate )

[UE4]Material Instance の Static Switch Parameter を 変更する関数・ノードを作る方法について - Qiita

enjoy !

[jwatte]

You will note that bool parameters are static parameters in materials – this means they cannot be changed at runtime.

If I recall correctly, these will show up as “static switch parameters” which can be edited in editor utilities but not in game/actor blueprints:

[Rev0verDrive]

You need to create a dynamic material instance for the mesh and element… promote the return value to a variable.

Once you have the DMI reference you can set the parameters.