How to select multiple mass forms at once

[gmoodyEVUW4]

I've created multiple mass forms in my model and want to select them all at once. I can ctrl click each one but that is burdensome. I want to use my cursor to selection box over all of them but when i do that it does not select any of the mass forms. That method will select everything else, but not the masses. Also, i cannot use the select similar command. Please help me select all of these masses at once. Thanks!

[ToanDN]

I have no issue selecting multiple mass elements at once using a window selection from top right to bottom left.  How did you draw your selection window?

[gmoodyEVUW4]

i created them using 'massing & site' - in-place mass. Take a look at the video i recorded. I can select all of them with clicking each one but the window selection does not work.

[azad.Nanva]

use mass schedule and select them all .

[gmoodyEVUW4]

the problem with that is it selects all of them and i am trying to select specific sections or part of my drawing. im getting the feel that there is no way to selection over masses to select them?

[azad.Nanva]

---

@gmoodyEVUW4 wrote:

the problem with that is it selects all of them and i am trying to select specific sections or part of my drawing. im getting the feel that there is no way to selection over masses to select them?

---

select in selection box and use the filter !

or you can use parameter for mass and use the parameter in schedule or you can save the selection for the next time !!

[gmoodyEVUW4]

not sure if you saw my video? ill post it here...but i cannot select in selection box to even get to the filter, that's my problem. the selection box will select everything else but does not select my mass objects.

[azad.Nanva]

---

@gmoodyEVUW4 wrote:

not sure if you saw my video? ill post it here...but i cannot select in selection box to even get to the filter, that's my problem. the selection box will select everything else but does not select my mass objects.

---

it is really dark and i can't understand clearly,but i think this is not group and also not Assembly and you Restart the Revit and windows for issue, also you can select every things except the mass!! rigth?

[gmoodyEVUW4]

sorry, see new video. and no, its not a group or assembly. ive had this issue for long on all my projects.

[TripleM-Dev.net]

Hi @gmoodyEVUW4,

Not sure what's happening there, something not selecting with window/crossing selection is normally due to something obscuring parts. In floorplan this could be a underlay, transparant filled regen etc.

In a 3D view, maybe (large/long) reference planes in families block something??

Try this: select one mass and then Isolate category. Now try a cross/window selection, does that work?

Also, in the vid the select window doesn't follow the cursor, due to the screencap software?

- Michel

[Sleepingfish_Kuo]

1. Create a schedule of mass. Select them in the schedule and then go to your view.

When without Api, I usually select objects by setting a schedule(with filter maybe).

Making a big window/crossing selection in view always burns my PC.

2. Right click and select all instances (in project browser)

After Revit 2022, select all instances work when selecting mulitple types.

https://help.autodesk.com/view/RVT/2025/ENU/?guid=GUID-7DF6C28E-72AA-4840-9EFE-81FA501D8543

[azad.Nanva]

---

@gmoodyEVUW4 wrote:

sorry, see new video. and no, its not a group or assembly. ive had this issue for long on all my projects.

---

did you control these two part :

another interesting point,why your cursor and selected element has distance? 

zoom out(2x) or more and make a bigger selection box that cover the distance of cursor and element and try to select them!
i be glad to see what happend.