DMI substance not changing in game mode

I created a metal that should rust along time, but I got this problem: when I hit play and enter in game mode, the slider in Graph Instance moves, but the rust don’t increases or changes in viewport at all. Here my BP:

I followed this exact tutorial dozens of times this exact tutorial but the problem persists. I changed UE4 versions, change computers and nothing works. I’ve tried a material made by a friend, I tried a material from allegorithmic official source, the same problem continues.

I’ve been stuck in this problem for almost a month, if someone could help me, I would be really really really grateful.

In allegorithmic forum, a staff member explained to me that a sync node conected to the output of Set Input Float makes the magic.

THANK YOU SOOOOO MUCH!!! sync node worked perfectly