Clockwork Group.FormElements cant group FreeForm

Hi all, im trying to group few freeform elements by clockwork node Group.FormElements in Family Enviroment. Im using Revit 2018 and dynamo 2.0. It giv es null values, tried everything. Any ideas or mayby it is diffrent node to do this. Its crucial for me, I used groups in whole project and at the end appeared that it can’t be done :frowning: