Error when trying to Serialize a field that is in a class

So I'm am trying to make a blackboard for a behavior tree system, and I would like to be able to add items to the blackboard through the inspector. I have a serializable dictionary that works fine when it's on my Entity script by itself, but once I try putting it into the blackboard class and serializing that on the Entity script I get an error:

ArgumentException: Field m_dBoolValues defined on type BlackBoard is not a field on the target object which is of type AIEntity.

I can serialize and show a variable such as a normal bool just fine in the blackboard, but it just doesn't seem to work with the dictionary.

I imagine it is just something small I am missing, but I'm at a loss and the error itself doesn't make much sense to me.