topic Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29 in GDL

Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Andras Bognar — Wed, 25 Mar 2026 07:50:48 GMT

Somehow, our custom-made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29. They were ok in Archicad 25 and 27, but not in 29. Not sure what I need to change in the Master Script and the Parameter Script of these objects to be able to use the MVO 2D and 3D detail levels in Archicad 29. Some of them are made purely with the Library Part Maker 25 - 27, some of them by Param-O 25 - 27, with a little bit of a tweak in the GDL script (Master Script and Parameter Script).

Operating system used: Windows 11

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Barry Kelly — Wed, 25 Mar 2026 07:49:43 GMT

Old 27 objects need to use the old MVO Globals unless you can re-script them to use the new 28/29 MVO Globals.

Here are a couple of post about it, not sure if they will help.

https://community.graphisoft.com/t5/GDL/LibraryGlobals13-has-been-replaced-by-Objects-MVOSettings/m-p/686726

https://community.graphisoft.com/t5/GDL/GDL-amp-the-Global-Library/m-p/669680

Barry.

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Davor P — Wed, 25 Mar 2026 15:10:37 GMT

@Andras Bognar I had the same problem and worked out a solution by having GDL check the Archicad version and then it either uses old or new LOD macro. I only needed it for 3D script but it might help.
https://community.graphisoft.com/t5/Libraries-objects/29-MVO-object-LOD-drop-in-GDL-script-wanted/td-p/695046

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Andras Bognar — Thu, 26 Mar 2026 00:04:08 GMT

Thanks. Almost there, although it can't find the "Label Schematic."

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Andras Bognar — Wed, 01 Apr 2026 18:08:35 GMT

Hi Barry,

Thanks. I skimmed those through, but still not sure what to change to be suitable with the 28/29 MVO macros.

The Master Script looks like this at the moment:

DETLEVEL_2D_MVO = 2 !MVO DETLEVEL_2D_DETAILED = 3 !Full DETLEVEL_2D_SIMPLE = 4 !Medium DETLEVEL_2D_DRAFT = 5 !Low dim detlevel2D_index[], detlevel2D_desc[] iD=1 detlevel2D_index[iD]=DETLEVEL_2D_MVO : detlevel2D_desc[id]= "By MVO" : iD=iD+1 detlevel2D_index[iD]=DETLEVEL_2D_DETAILED : detlevel2D_desc[id]= "Full" : iD=iD+1 detlevel2D_index[iD]=DETLEVEL_2D_SIMPLE : detlevel2D_desc[id]= "Medium" : iD=iD+1 detlevel2D_index[iD]=DETLEVEL_2D_DRAFT : detlevel2D_desc[id]= "Low" : iD=iD+1 if iDetlevel2D=DETLEVEL_2D_MVO then iDetlevel2D=DETLEVEL_2D_DETAILED success = libraryglobal ("LibraryGlobals13","iDetlevelMVO2D",_reqDetLevel2D) if success then iDetlevel2D=_reqDetLevel2D endif DETLEVEL_3D_MVO = 2 !MVO DETLEVEL_3D_DETAILED = 3 !Full DETLEVEL_3D_SIMPLE = 4 !Medium DETLEVEL_3D_DRAFT = 5 !Low dim detlevel3D_index[], detlevel3D_desc[] iD=1 detlevel3D_index[iD]=DETLEVEL_3D_MVO : detlevel3D_desc[id]= "By MVO" : iD=iD+1 detlevel3D_index[iD]=DETLEVEL_3D_DETAILED : detlevel3D_desc[id]= "Full" : iD=iD+1 detlevel3D_index[iD]=DETLEVEL_3D_SIMPLE : detlevel3D_desc[id]= "Medium" : iD=iD+1 detlevel3D_index[iD]=DETLEVEL_3D_DRAFT : detlevel3D_desc[id]= "Low" : iD=iD+1 if iDetlevel3D=DETLEVEL_3D_MVO then iDetlevel3D=DETLEVEL_3D_DETAILED success = libraryglobal ("LibraryGlobals13","iDetlevelMVO3D",_reqDetLevel3D) if success then iDetlevel3D=_reqDetLevel3D endif IF iDetlevel3D=DETLEVEL_3D_DETAILED then var_77=1 var_151=0 ENDIF IF iDetlevel3D=DETLEVEL_3D_SIMPLE then var_77=0 var_151=1 var_142=16 ENDIF IF iDetlevel3D=DETLEVEL_3D_DRAFT then var_77=0 var_151=1 var_142=8 ENDIF

The Parameter Script is this:

values{2} "iDetlevel2D" detlevel2D_index, detlevel2D_desc values{2} "iDetlevel3D" detlevel3D_index, detlevel3D_desc ! Values values "var_4" range [0.070,0.325] values "var_37" range [0.145,0.240]

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Davor P — Wed, 01 Apr 2026 18:09:05 GMT

Schematic and Detailed are the subroutines where you put code for each. Or you wire it up differently, depending how you are handling LOD.

In my case I have

"SCHEMATIC": !code for schematic RETURN "SIMPLIFIED": !code for simplified RETURN "DETAILED": !code for detailed RETURN

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Andras Bognar — Wed, 01 Apr 2026 18:09:51 GMT

I rewatched this video (from BarkingDogBIM) https://www.youtube.com/watch?v=0re8RrU64yo and followed the "crumbs," finding a similar structure in the new MOV Scripts. So, I replaced the old ones with the new ones.

I had to change the iDetlevel3D to iDetlev3D in the Parameters:

The Master Script looks like this now ( changes in BOLD-Italic )

----------------------------------------------------- ! const values for parameter iDetlevel2D and/or iDetLev3D OBJECT_SCHEMATIC = 1 OBJECT_SIMPLIFIED = 2 OBJECT_FULL = 3 OBJECT_SYMBOLIC = 10 ! only for elemoverride 2D OBJECT_SYMBOLIC2 = 11 ! only for elemoverride 2D OBJECT_AXIS = 12 ! only for elemoverride 2D OBJECT_BYMVO = 0 dim detlevel3D_index[], detlevel3D_desc[] iD=1 detlevel3D_index[iD]=OBJECT_BYMVO : detlevel3D_desc[id]= "By MVO" : iD=iD+1 detlevel3D_index[iD]=OBJECT_FULL : detlevel3D_desc[id]= "Full" : iD=iD+1 detlevel3D_index[iD]=OBJECT_SIMPLIFIED : detlevel3D_desc[id]= "Medium" : iD=iD+1 detlevel3D_index[iD]=OBJECT_SCHEMATIC : detlevel3D_desc[id]= "Low" : iD=iD+1 if iDetlev3D=OBJECT_BYMVO then success = libraryglobal ("Objects_MVOSettings","iObjectDetlevel3D",_reqDetLevel3D) if success then iDetlev3D=_reqDetLevel3D endif IF iDetlev3D=OBJECT_FULL then var_77=1 var_151=0 ENDIF IF iDetlev3D=OBJECT_SIMPLIFIED then var_77=0 var_151=1 var_142=16 ENDIF IF iDetlev3D=OBJECT_SCHEMATIC then var_77=0 var_151=1 var_142=8 ENDIF -----------------------------------------------------

The Parameter Script Looks like this:

----------------------------------------------------- values{2} "iDetlev3D" detlevel3D_index, detlevel3D_desc ! Values values "var_4" range [0.070,0.325] values "var_37" range [0.145,0.240] -----------------------------------------------------

This way, I can make new objects in Archicad 29 that work with the new MVO settings.

The plan is not to migrate every project from older versions to Archicad 29, since a lot of the Library Elements are not supported anymore by Central Innovation's Select Library. They have a tool to migrate the entire project, but only those objects can be migrated that are available at the new Global Ci Libraries.

If we need to use an older version of a file (25, 27) in Archicad 29, then we have three paths:

- One is to add the Migration Libraries after we migrated them from 25-27 to 29, and that will be a dead-end street, and we won't migrate that file any further.

- Second is when we migrate the project to 29 using the Central Innovation Migration Tool and then manually replace the objects that can't be migrated with these object that has the new MVO scripts, and we can migrate it further in the future.

- Third is redraw the project in Archicad 29 and we can migrate it further in the future.

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Barry Kelly — Mon, 30 Mar 2026 11:18:49 GMT

A fourth option is to open the file in 29 but just keep using the old libraries.

Barry.

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Andras Bognar — Mon, 30 Mar 2026 21:23:43 GMT

Hi Barry,

That is option one. Using the Migration Libraries in Archicad 29, and don't migrate that project to any further versions of Archicad.

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Barry Kelly — Tue, 31 Mar 2026 00:19:54 GMT

Sorry, I thought one was saying your were migrating 25-27 to 29 - there is no such thing as migrating to 29, at least not easily as you have found.

You only need the older migration libraries if the job has objects from older versions.

Otherwise just loading the 27 library is all you need.

Barry.

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Andras Bognar — Tue, 31 Mar 2026 03:16:42 GMT

Hi Barry, I think I got it now. Yes, that is the 4th option. I am not sure how the file will behave if we go on that path, though. Do you have any good or bad experience with such a solution?

Re: Custom made GDL objects from Archicad 27 can't use the MVO settings in Archicad 29

Barry Kelly — Tue, 31 Mar 2026 03:21:47 GMT

Not really as I am not using 28 or 29 yet.

All you are doing is using the new software but with the old libraries you are still using the old Model View Option settings.

So long as you don't try to load the 28/29 library packs as well, you should be able to keep working on those old files as they are, just with a newer program.

Don't mix the old and the new libraries, that is when it becomes complicated.

Barry.