Niagara Flipbook Having Problems

Hello,
i am making a fire flipbook with a niagara system that i baked. When i view the Texture it loks like this:

With “Compress Without Alpha” on i get the image that i want:

I then make this material with the flipbook texture:

If i then make a actor with a Material Billboard it looks like this:

The Problem:
I don’t want the white background on the Billboard. Just the fire. But when i enable Alpha on the Texture i get nothing.

Any suggestions?
Thanks!

I fixed it myself:
Setting the material Output that uses the flipbook to Translucent and pluggin RGBA in Emmisive Color and Opacity.