Flipbook texture for UNREAL 4

Hi all,

I’ve created a flipbook texture using R|G|B |A channels. Each channel has it own sprite animtion. I also have a Z-depth channel which I have put in my
alpha slot. My question is how/what do I do with the RGBA channels from my texturenode? My RGBA now goes to my emissive slot. Many thanks.
This is a material from udk Which I need to port to unreal 4.