Write material quantities into family parameter

Good evening. I would ask if ther’s a way, to write into a parameter the specific quantity of a material, for example how much plaster in a wall etc… My target is to have the material quantities into the family information in a IFC exportation.
Thank you,

Welcome to the forums!

This is definitely possible, but highly dependent on how easily you can calculate material volumes. Walls are easy, other element types may not be so easy.

Thank for the welcome!
In Revit, i calculate the materials quantities with the Material take off schedule. But, i’d like to read the value into a system family parameter that i can assign.

Yeah, easy enough. As long as you have a parameter you can write to it.