topic Re: Parameter Dropdown not working in 3D Part & Assembly Design

Parameter Dropdown not working

KS_13238586 — Mon, 02 Mar 2026 13:28:26 GMT

I created a script as shown in the image and saved it as a .lst file. I also referenced the same file in config.pro. However, when I create a new parameter in Creo, the dropdown list does not appear.

Please help me resolve this issue.

Note - I also tried with .txt file instead of .lst

Creo Version - 11.0.5.0

Re: Parameter Dropdown not working

kdirth — Mon, 02 Mar 2026 15:11:30 GMT

Create lst file and reference it config.pro

In parameters dialog select Tools>Update Restriction Definition, Check the box to Convert model non-restricted... and apply.

Re: Parameter Dropdown not working

remy — Tue, 03 Mar 2026 07:35:24 GMT

Please confirm you went through this exhaustive article : https://www.ptc.com/en/support/article/CS51011

I personally added the block examples and the animations back then so you could re-use them easily.

by comparison, it seems like you try to create an enum list with a default value.
In the article, enum examples don't have a default value.

First to confirm this assumption, please comment the Default line or re-use one of the examples and iterate from there.

Re: Parameter Dropdown not working

KS_13238586 — Tue, 03 Mar 2026 08:19:41 GMT

Hi @remy ,
I have checked the article you have shared. I already fixed the issue.
Currently I am exploring how to add the empty values in enum in restricted Parameters. Please see the below from my lst file. Can you please help me on this?

ND_ParamDefArr_K01 = {
{ Name = BOM
Type = string
Default = ''
Enum = { '', 'Normal', 'Reference' }
Access = full
}

}

As far as I understand, we cannot assign null values to an enum. Is there any alternative way to achieve this?

Re: Parameter Dropdown not working

remy — Tue, 03 Mar 2026 09:03:02 GMT

So your request has shifted and you need to add a default value on an enum on one hand and that default value needs to be empty on the other hand.

Try the space character :

ND_ParamDefArr_K01 = { { Name = BOM Type = string Default = ' ' Enum = { ' ', 'Normal', 'Reference' } Access = full } }