Troubles making a dynamic material instance

Hello :slight_smile:

I’m trying to achieve a functional POM decal (working with actor rotation), following instructions and ideas from a few places on the web (a couple below)

https://forums.unrealengine.com/development-discussion/rendering/71915-pom-decal-decal-rotation-screws-up-pom-effect/page2

At that point I have a Decal material with effective POM, and a Decal actor with its blueprint that contains the MID.
Fact is, contrary to every example I find, I can’t seem to plug the return value of the MID node into the vector parameter vallue collection. It shows the following error : material instance dynamic object reference is not compatible with material parameter collection object reference

I’m running out of clue here as it gets hard to find further informations and I’m a blueprint noob. Maybe I’m not doing the construction script in the right place.

It’s frustrating as I’m quite close to conclusion, some help would be appreciated. Thanks!