Spawn niagara particles from Text3d

I’d like to spawn particles from text3d object, which is spawned in blueprint.
AFAIK niagara can use only static mesh or skeletal mesh to spawn particles from. (for example like shown in this tutorial Niagara Particle Mesh Morph on Vimeo )
For now I cannot find way to convert (or cast) spawned text3d object to static mesh.
Any ideas how to Spawn niagara particles from Text3d?