how a drop down menu is populated

[dev_K]

Hello,

How can I see how the dropdown is populated?

In my catalog item I have this dropdown that gets populated with options:

Also, those options depend on the selected environment selected before:

However after checking the catalog item variables I see that for 'security zone' field it is a select box (and not a reference field as I would expect that will just fetch options from a table)

however, when i check the question choices there are none.

How can I investigate how the dropdown is populated??

[dgarad]

Hi @dev_K 

check any client script populates this value.

[dev_K]

Besides the ones here:

are there other client scripts that may populate the dropdown?

I ve checked the one listed here and I don't see anything that does it.

[dgarad]

Only these client scripts work on the catalog. one of them populate value.

[dev_K]

what exactly is loadSecurityZones()? is that a script include?