I am obviously doing something wrong, however, l have a list of Family Instances, which l wish to alter a named parameter by a varying amount, however, it return null. Why?
It states that "Parameter names and values must have have matching list lengths.
Your element and value lists look like they probably match in structure but you’re only supplying a single parameter name. Try setting list levels to @L1 for the parameter name.
I am trying to relate an image to the wall facade brickwork, however, it seems there is a numerical difference which could relate to the error message.
If you don’t need to keep your elements grouped for later in the graph I would just flatten everything completely. If you are going to be using the elements later on I would try duplicating the parameter name for every value you have so that all inputs have the exact same list structure and length.
To let you know what l am attempting to do, it to create an individual brick facade, using a generic brick with mortar family, then locate the required number of bricks, then drive each brick with an offset via it’s offset parameter within the family, to shift each brick by an amount relating to the red value associated to the linked image.
I am getting the bricks in, it is the adjustment of the placed elements regarding their shift that is the issue.