topic Re: Add Object Parameter to Label in GDL

Add Object Parameter to Label

Lewis at Flourish — Wed, 11 Feb 2026 07:22:21 GMT

Hi there,

I have two questions -

Q1 is about technical skills in AC. E.g "how do I do 'Thing X' in AC?"

Q2 is about documentation philosophy. E.g. "is doing 'Thing X' an appropriate way to approach the problem in light of how AC is intended to be used?"

Q1: Technical Skill

is it possible to edit the parameters of a label to be able to read any chosen parameter within an object?

For example - in the screenshot below, the mixer tap has a 'product code' parameter which I would like to be able to label on drawings.

I have inspected the parameters of the 'Classifications & Properties Label' but need direction on how to amend the script to display the parameters of the object in screenshot 1.

Q1 - Philosophy

To my mind, labelling an object based on a parameter that is 'baked' into the object leaves much less room for contradictions between your model and your schedule. For example, I love the Skin List label because it can report on BMAT IDs, and if I change the BMAT ID of a certain material, the text in all the labels will update automatically.

I come from Revit-land, and I struggle with the idea that there isn't a way (for example) to change 'Mixer Type 1' to 'Mixer Type 2' and for the label to automatically change from the predefined code associated with Mixer 1, to the predefined code associated with Mixer 2.

This might not be a big deal on small jobs, but labelling contradictions creep-in on big jobs when (for example) a handful of mixers are being changed to a different product selection, but the code does not update with it.

Operating system used: Windows 3001.3000

Re: Add Object Parameter to Label

Barry Kelly — Wed, 11 Feb 2026 07:20:48 GMT

It can be done but you really need to know a bit of GDL scripting to control how you want the label to look.

In the 2D script of the label, you will need the following command....

rrr=REQUEST ("ASSOCLP_PARVALUE", "actual_parameter_name", name_or_index, type, flags, dim1, dim2, p_values)

"actual_parameter_name" is the actual name (in quotes) of the parameter for what you want to get the value of.

You will need to open the tap object to find that parameter name.

The command will place the value in the 'p_values' argument.

So you will then need to manipulate the 2D script to output text for the 'p_values' (without quotes)

You will need to do the same for your second parameter but the argument will be 'p_values_2' (without the quotes) so it doesn't get mixed up with the first p_values argument.

But you will need to be able to script the label to show the output as you want it.

Something I don't have time to explain just at the moment.

Barry.

Re: Add Object Parameter to Label

Barry Kelly — Wed, 11 Feb 2026 07:33:54 GMT

And I should say that this will not work with any other library object, unless they have exactly the same parameters you are looking for.

It is a shame that the auto-text label can not access object parameters.

It can access object properties, but object properties can not access object parameters either.

So you could label a property, but you would have to manually change the value of the property in the object.

Barry.

Re: Add Object Parameter to Label

Ahmed_K — Wed, 11 Feb 2026 10:08:28 GMT

In the IFC translator settings , go to the properties mapping dialog ,

Create new property and assign the correct object parameter ,

then you can label that ifc property using the classification and properties label

Re: Add Object Parameter to Label

Jochen Suehlo — Wed, 11 Feb 2026 10:27:24 GMT

In the GER forum there was a question for a label that can automatically read all Object Parameters.
Frank Beister had such a label created in his BIM-All-Doors.
I extracted the label and streamlined it a bit with a prefix-filter for faster Parameter-Search.
See attachement.

Re: Add Object Parameter to Label

Lewis at Flourish — Wed, 11 Feb 2026 23:19:09 GMT

these are excellent responses @Barry Kelly , @Jochen Suehlo @Ahmed_K thank you for the direction. I will look into each of them.

I'm interested to know from long-term users such as yourselves - do you have any thoughts on Part 2 of my post? Am I approaching documentation in Archicad the 'wrong' way, or is this a legitimate problem faced by other users also?

Re: Add Object Parameter to Label

easyDoesIt — Tue, 17 Mar 2026 00:48:38 GMT

Hi Lewis,

At Archibites we have a label that will label parameters of any object. You can get more details here and download a trial version to see if it meets what you want.

Re: Add Object Parameter to Label

Lingwisyer — Tue, 17 Mar 2026 01:29:37 GMT

As a consolation, all of the Caroma objects use common parameters, so a label that works for one should work for all of them.

Re: Add Object Parameter to Label

Aaron Bourgoin — Tue, 17 Mar 2026 13:59:29 GMT

Tim, have you got a link for the GDL versions? Can't seem to find them.

Re: Add Object Parameter to Label

Claudiu Serban — Tue, 17 Mar 2026 16:06:04 GMT

Here is how i achieved this:

1. For each property i needed to label, i set up a string based parameter that holds the UUID of that property

2. Set up a property holding dict in the master script

dict propertyData _actProperty = "" dim _sLocalization[] _sLocalization[1] = "<" + `ID` + ">" _sLocalization[2] = "<" + `Custom Name` + ">" _sLocalization[3] = "<" + `Name` + ">" _sLocalization[4] = "<" + `None` + ">" _sLocalization[5] = "<" + `Hotlink ID` + ">" _sLocalization[6] = `Custom` _sLocalization[7] = "<" + `Custom Text` + ">" _sLocalization[8] = "<" + `no content defined` + ">" _sLocalization[9] = "---"

3. Prepare the UI for the new settings

TABID_ROOT = -1 _idxTab = 1 dim stTabTitles[1] stTabTitles[1] = `Content` ui_current_page 0 itemID = 10 xEnd = 444 yEnd = 266 UIGroup = 1 ! ------------------------------------------------------------------------------ dict propertyRequestIn, propertyRequestOut n = request ("Property_Tree_Of_Parent", propertyRequestIn, propertyRequestOut) if n <= 0 then ! Make sure these fields exist in the DICT dim emptyArray[] propertyRequestOut.propertyTree = emptyArray propertyRequestOut.treeDepth = 3 endif dim _propertyTreeItemForNone[] for iCol = 1 to propertyRequestOut.treeDepth _propertyTreeItemForNone[iCol] = "" next iCol _propertyTreeItemForNone[propertyRequestOut.treeDepth + 1] = `None` ui_listfield UIGroup, 0, 0, xEnd, yEnd, 0 ui_listitem itemID, UIGroup, "grpProps", 0, "", ""

4. For each property, set up a custom listitem

itemID = itemID + 1 r = REQUEST ("Property_Name", propFloor, _typeName, _groupName, _propertyName) ui_custom_popup_listitem itemID, UIGroup, "propFloor", 1, "" , "", 1, propertyRequestOut.treeDepth, 1, _propertyName, _propertyTreeItemForNone, propertyRequestOut.propertyTree

5. Now that property holds the UUID of the property you want to read. You can then easily use this to read it:

n = request ("Property_Value_Of_Parent", propFloor, type, dim1, dim2, fTxt)

My label here is a zone label and reads the finishes of floor, walls and ceiling, but you can generalize it. Saving it as a favorite or opt-picking it will retain the stored UUID so you can use same label to display different properties in the same text2 if you want.

Re: Add Object Parameter to Label

Lingwisyer — Wed, 18 Mar 2026 01:35:43 GMT

Hm... At a quick glance, the Caroma Specify website seems to have had an update and the library now shows individual products in other formats rather than the consolidated libraries... The libraries contained multi-objects, some of which are no longer part of the catelogue, so I assume they removed them due to being outdated. Hopefully they release updated AC libraries at somepoint, maybe containing individual objects for easier updating.

Re: Add Object Parameter to Label

Aaron Bourgoin — Wed, 18 Mar 2026 13:09:12 GMT

Thanks for your comment. As always.

Re: Add Object Parameter to Label

Patrick M — Wed, 18 Mar 2026 14:03:47 GMT

sorry, did not read the full thread, but this should all be done through properties now. Any info attached to an objects parameter list is a dead end in so many ways.
Properties are an open door for annotation, scheduling, and sharing info