In the set texture parameter value block, I need to set the parameter of the texture. However, I don’t know where I can set the this parameter.
The material you are trying to set the texture for will need to have the parameters already setup in them to be able to edit them, to create a texture parameter in your material right-click the texture and select convert to TextureParameter then in the details panel setup its name then to use the Set Texture Parameter Value node you will need to create a Dynamic Material Instance of that material in your Blueprint and from the return value of creating it you can then plug the pins in on the Set Texture Parameter Value node make sure to set the parameter name exactly as you did in the material and then you can either use a texture variable to set the texture value or simply set the texture on the node. To apply the material to something and see any changes you make use a Set Material node and plug the object into the Target pin:
Thank you so much