How to fix "has a function containing the wrong number of arguments" error?

[Dave Smith]

Hi everyone again.

I’m working on making my database roll with each month that changes.
Below is what I have so far, and was hoping someone could help me with the rest.

The error message I’m getting is:
The expression you entered has a function containing the wrong number of arguments.

Jan_Loan_Amount: Sum(IIf([CORRESPONDENT_PURCHASE_DATE] Between DateSerial(Year(Date()),Month(Date())-13,1) And DateSerial(Year(Date()),Month(Date())-12,0),[Amount_Actual_Loan])And Trim([OMNI_Status1])>"?9?",1,0)))

Feb_Loan_Amount: Sum(IIf([CORRESPONDENT_PURCHASE_DATE] Between DateSerial(Year(Date()),Month(Date())-12,1) And DateSerial(Year(Date()),Month(Date())-13,0),[Amount_Actual_Loan])And Trim([OMNI_Status1])>"?9?",1,0)))

Thanks for your help

[Rabbit]

Break it out into sections and you'll see the problem.

Jan_Loan_Amount: Sum(
  IIf(
    [CORRESPONDENT_PURCHASE_DATE] Between
      DateSerial(Year(Date()),Month(Date())-13,1)
    And
      DateSerial(Year(Date()),Month(Date())-12,0)
  ,
    [Amount_Actual_Loan]
  ) 
  And
  Trim([OMNI_Status1])>"?9?"
  ,1,0
)
)
)

[Dave Smith]

sorry Rabbit - cant see it. any help?