Hi all, I’ve pulled together a script to set the Guide Grids on certain sheets, but I’m struggling to turn them off.
GetParameterValueByName suggests the None option is a string (it’s orange) but feeding that string in doesn’t work.
Listing out the available Guide Grid options has all my A1L, A1P etc but doesn’t list a option for me to use.
You can see from the sheets that currently use Guide Grids that the value is an element (ElementId). The user-readable value for no guide grids is <None> but the actual value is still an ElementId. Revit actually has a specific element Id object, InvalidElementId, to represent these cases of a “null element Id”. Unfortunately, it’s not currently available in Dynamo so you have to go through Python and the Revit API to get it and use it.
Thanks, in that case I may try obtaining the element ID from one of the sheets currently set as none, then I might be able to get element by id and apply that in Set Parameter Value?
I’ll give it a try today.
EDIT: scratch that, the reason Dynamo reports it as a string is because as you rightly said it’s not reporting it as an element.
