Custom Moderation Tools

[leefish]

MyBB version:1.8.3   Xthreads version :1.6.3

I am trying to add a custom moderation tool that sets a custom thread value.

I am able to make the thread tool, but the value for the XThreads field does not "stick".

What I do:

I make a custom tool.
I go to Modify Custom Thread Field(s)
I click on the area and get a popup.
I select the field from the list and enter my values i
   in this case it is

xtfeature_threads=1

Press save, the tool says saved successfully. Go to edit tool and Modify Custom Thread Field(s) area is empty.

This custom thread field  is set up so:

Title: Display To Portal?
Key: xtfeature_threads
Applicable Forums: some forums
Input Field Type: Listbox
Field Input Height: 1
Values List :
Code:
1{|}Yes
2{|}No
Editable by / Required Field? : Administrators
Allow Filtering: Yes

The field works as intended if I edit from inside the post, but the custom mod tool does not. Is this a bug or am I doing something wrong?