*Steps to reproduce:*
# Create a new "MyCustomAgent" Monobehavior
# Create an custom action "Get Agent in AgentList" and set AgentList as a List<GameObject>
# Open the new action (from code) and change the type of the list to be List<MyCustomAgent>
# Go back in the graph and create a blackboard variable from the AgentList field

\\
*Actual results:* 
* the blackboard view doesn't let you set default value for list items
* an error in throw in the console ("No UI type found for TypedVariableModel`1.")

*Expected results:* 
* No error is throw
* It is possible to set default value for the list from the blackboard view

\\
*Reproducible with versions:* 
1.0.0; 1.0.11