Problem with family: Family stops responding to properties

Hello everyone.
I have done the repetition of a family (architectural pillar) along some curves by means of a script in Dynamo. It came out great. However when I want to limit the family to being between level 1 and level 2, or offset their height with respect to one of these levels, it does not work. Does anyone know why the family stopped responding to the properties of the item?

Finished, the solution was to add the node “FamilyInstance.ByPointAndLevel”. Apparently, having a level assigned to the family, it recovers all the properties of the element.