Change visualization parameter of curtain panel in dynamo

Hi Eduardo, welcome to the forum!
Please start by reading this post How to get help on the Dynamo forums
When exporting an image of your graph, zoom in so nodes are readable and use the Export as image of the workspace.
You have selected in the geometry in the curtain wall - use preview visibility to hide in dynamo
If you want to hide in Revit - change the type using the family instances