Behavior Tree Instance Editable Issue

Im fairly new to BTs so sorry if im overlooking something simple.

Im having an issue with selecting the value of an instance editable that ive set up in a task. i created an actor ref and enabled the editable but cannot choose the value in the drop down from the task in the BT. when i choose one the value just stays blank.

Is there something i havent done to get this to work or is this not possible. if anyone can help let me know, otherwise ill be making a rather large switch on enum :frowning:

so i changed the variable from an actor to a class and that allowed me to select what i needed. my solutions works but i would still like to know why i couldnt use actors.