A List of Lists as a SerializedProperty

Im working on a Custom Editor, and for that I need certain properties serialized. My problem is, that one of those properties ist a list of lists and I can not serialize it. Following Example:

Code (CSharp):

1. // In my Class
2. public List<TransitionLine> transitionLine = new List<TransitionLine>();
3. public List<List<TransitionParameter>> transitionParameterLists = new List<List<TransitionParameter>>();
4. // In my Custom Editor
5. SerializedProperty transitionLineProperty = serializedObject.FindProperty("transitionLine");
6. SerializedProperty transitionParameterListsProperty = serializedObject.FindProperty("transitionParameterLists");

transitionLineProperty will be the desired property, transitionParameterListsProperty will be null. Making a List of Arrays leads to the same result. TransitionLine and TransitionParameter are both Scriptable Objects.

Any Ideas on how I can make the latter one work as a serializedProperty as well?

 

You could make a field for every list item, with a length field next to it, in order to change the size.

 

If I understand you correctly, this would limit me to a predefined number of lists. For my usecase, I need a variable amount of lists. To add a little background information, transitionLineProperty is used in a ReorderableList, and with every entry I create there, I add a new ReorderableList that uses one of the Lists of transitionParameterListsProperty.