Hi @Roperg,
A little warning for rotated elements.
A boundingbox is always aligned to the x and y axis.
So when your element is rotated for example 45 degrees, the boundingbox will be larger to let your element fit.
The cuboid (and your parameters) will also be larger than your element.
In the link below i created a workaround workflow for that.
https://forum.dynamobim.com/t/create-cuboid-as-element-outline/12440/8?u=mjb-online
For the rest i agree with @jacob.small, first get rid of the null values.
I hope it can be of help,
Mark