Firefly Node - Billboard not change select material from Firefly Material Cache

[pradeep]

First time select material load in Firefly Node - Billboard but when change material, of Firefly Material Cache then Firefly Node - Billboard not load material.
https://www.dropbox.com/s/gpw47lr3qihno77/B.mp4?dl=0.

[Triadian]

you need to clear the billboards material first - insert a get material 0 just before the get material from cache

[pradeep]

you need to clear the billboards material first - insert a get material 0 just before the get material from cache

Why not work without clear the billboards material first - insert a get material 0 ?
Only this object clear the billboards material first - insert a get material 0 just before the get material from cache.

Firefly Node - Primitive, Firefly Node - Water, Firefly Node - Particle System are work well i.e. change material, without clear material first - insert a get material 0. For billboards it is possible in new update of Firefly ??