I have created a revit family which consist of cylinders placed on top of each other where all the cylinders thickness varies. So now I have thickness values in my excel. I am using dynamo to extract these parameter to revit to change the thickness accordingly. I have tried few ways, but no luck. Please help me with this.
Show us what you have so far. Your family needs to have parameters assigned to each cylinder thickness and then you can just modify those values accordingly.