Help Identifying Last Amount by ID and Date in Related table

[bmoon]

I need help identifying the last amount for a grant ID. My data can have multiple transactions on the same date and so I've been trying to find the value using the max of a transaction ID and date. I've found many similar problems on the forum, but I haven't been able to get anything to work. Here's an example of my data and what I'm looking for:

This is how the tables are related:

My current DAX is, but it keeps returning 0:

CADA_Last_Rqst_Ind =
VAR Current_Pymt_Dt =
    SELECTEDVALUE ( 'Pymt tran'[PYMT_RQST_DATE] )
VAR Current_Tran_ID =
    SELECTEDVALUE ( 'Pymt rqst'[PYMT_TRAN_ID] )
VAR Last_Pymt_Rqst_Dt =
    CALCULATE ( MAX ( 'Pymt tran'[PYMT_RQST_DATE] ), 'Pymt rqst'[AWD_ID] )
VAR Last_Tran_ID =
    CALCULATE ( MAX ( 'Pymt rqst'[PYMT_TRAN_ID] ), 'Pymt rqst'[AWD_ID] )
RETURN
    IF (
        AND ( Current_Tran_ID = Last_Tran_ID, Current_Pymt_Dt = Last_Pymt_Rqst_Dt ),
        SUM ( 'Pymt rqst'[CADA_Net_Expn_Dol] ),
        0
    )

Please help!

[bmoon]

It worked. Thanks so much!

[smpa01 · Accepted solution]

@bmoon  you can use two measures like this

LastDisb = 
CALCULATE (
    MAX ( 'Pymt Amt'[Ttl Disb] ),
    FILTER (
        'Pymt Amt',
        'Pymt Amt'[Tran ID]
            = CALCULATE (
                MAX ( 'Pymt Tran'[Tran ID] ),
                FILTER (
                    ALL ( 'Pymt Tran' ),
                    'Pymt Tran'[Entitiy ID] = MAX ( 'Pymt Tran'[Entitiy ID] )
                        && 'Pymt Tran'[Pymt Dt]
                            = CALCULATE (
                                MAX ( 'Pymt Tran'[Pymt Dt] ),
                                ALLEXCEPT ( 'Pymt Tran', 'Pymt Tran'[Entitiy ID] )
                            )
                )
            )
    )
)

Date =
MAXX (
    ADDCOLUMNS (
        'Pymt Amt',
        "date", MAXX ( RELATEDTABLE ( 'Pymt Tran' ), 'Pymt Tran'[Pymt Dt] )
    ),
    [date]
)