Where is "Set VectorParam" in kismet?
I'm learning official tutorial, but can't find "Set VectorParam" in kismet. There is only Set ScaleParame.
They took it out a while ago. What are you trying to do? There's likely an easy way around it.
If not, what you could do is split your vector param into it's components using channel masks, then have each component as a scalar param and then combine them back together.
The implementation to change material instances through kismet had a couple of issues, which is why that node was removed. Set scalar param is still in there, so you could do what Alex suggests, however this can also cause trouble. The only way to adjust a material instance without running into these issues is by using a matinee sequence to animate them.
This is one of those things they've changed since the UDK videos were made, they've removed the Set VectorParam node from kismet because it has some issues with level streaming. It is now possible to use all three detail textures for texture blending. Texturing mirroring is useful for reusing texture memory, but it can lead to problems with specular lighting.