Getting APP-FF-33005 "The local variable XXXXXX was used before being initialized"

We are using EBS 12.2.10.

Trying to modify an existing fast formula to use new functions and I am getting the above error. Fast formulas are not my thing so I am sure I am missing something. Maybe even at the database function level.

Here are the new functions:

Here is the functions in EBS. Not sure what the context usage needs to be. I do not need to pass anything to it to get my results. Tried assignment ID and it made no difference.

Here is the database function...

 function get_comp_earned_half_ff (p_assignment_id in number) return varchar2 is