Issue updating geometry from Grasshopper to Revit

Good morning,

I have done a simple model of a stadium stand and there is an issue when I modify the distance between frames. Some columns do not update to their new position, so they become to slanted columns. However, they are correct in Grasshopper. Any idea why is happening this?

I attach some images (I hope you can see them…) so you can see what is happening.

Case 1) Distance between frames 10m

Case 2) Distance between frames 5m


Thanks in advance.


Hola @Arantza,

There is a fix related to this problem on v1.6. Can you confirm me what version of RiR are you using?



I will need a .gh file that makes this fail then.

Do you mind sharing a simplified version of your definition here?

Or the full one at Rhino - Upload to Support please use my email kike at as receiver.


I have sent you the file by email. If you do not receive it please let me know it.

Just in case, my Revit versión is 2021.1.4


Hi there,

Try to use the inspect element component and the instance parameters are exposed for you to change the parameter of it.


Could you explain this a little bit? I do not understand what can I change in those parameters so the geometry updates when I change a slider in Grasshopper.


You are adding Beams by Curve, what parameter are you trying to control?

You can use the inspect to see what parameters are available on the instance, then use Element Parameter to Modify.

Hi Japhy,

Thanks for the explanation and image, but I am not trying to modify a beam/column parameter.
My problem is that when I create a geometry in Grasshopper, that may be modified with number sliders, the geometry created by RiR does not update correctly in Revit. As you can see in previous images, when I modify the distance between frames some columns are not vertical. However, in the Rhino view are vertical, and they should be vertical.

Isolating the members in question I’m not seeing the non-vertical columns.

Rhino.Inside Revit: 1.7.8124.25676 (2022-03-30T14:15:52)

[Expanded Information]
Rhino: 7.17.22081.03001 (Rhino 7)
Revit: 2022.1 (
CLR: 4.0.30319.42000 (4.8.4470.0)
OS: Microsoft Windows NT 10.0.19044.0

Try to modify the number slider “Distancia Alineaciones X” on the Left columns which has a value of 7.6 and change it to 5 and 12 for example. When I do that I start having issues

Still good. I’m leaning towards ‘spooky’ relationships in-between Revit Elements.

Try switching to the Replace tracking mode while you are playing with sliders.



Thanks Japhy,

I’ll try that and I’ll let you know if it is working or not. Might be the problem the RiR version? I have the 1.6.8… and I see that you have the 1.7.81… Should I update it?
Apart from this is there any way to modify the Tracking Mode of all Revit elements to “Enable Replace”?

1.6.8 should be fine. Unfortunately no, its a per component variable.

Hi Japhy,

I have changed the tracking mode to replace and now I don’t have the issue with the columns. However, as the elements are new each time, if I annotate something in revit is deleted.
It would be great if you could find the reason of the updating error with the replace tracking mode.

Apart from this, I can’t select the element in revit. I’ve ried to bake them in rhino and revit but I can’t select them. How do I transform the geometry into a revit element?

Thanks in advance

Revit Elements will try and do smart things, if you draw two lines in a family it will add relationships to them. You move one line the other endpoint moves with it. Something like that is what i suspect for your columns.

Using Replace removes any of these behind the scenes connections. One you are done flexing your model you can switch it back to update for annotations. Another option would be to have the annotation info managed in your GH definition. Adding the parameter values after.

The elements are pinned, do you have select pinned elements off?



How can I manage annotation in GH?

Thanks for the tip with pinned elements. They were pinned, once I pinned them off I could select them in Revit.

Arantza, Annotations (Tags) are managed like any other Element Type, we currently don’t have any Dimension capabilities.