Decay vertex map


I have an allembic file with a vertex map. How can decay the effect of the vertex map?
when i select the vertex tag on the allembic file there is a fields checkbox that gives me access to the field effectors but the decay modifier doesnt seem to do anything.


The Vertex Map in Alembic is baked, therefore you can’t manipulate the data correctly. What you can do is create a copy of the alembic object, make it editable and turn the original invisible. You can now drag the the alembic vertex map into the field list of the vertex map on the editable version. If you now add decay it should work as expected. Unfortunately this workflow will only work for abc files with fixed point / polycount. So e.g. meshed fluids or volumes won’t work.