basic-blue-reptile-3

(define-public (calculate-cumulated (account principal))
  (let (
    (previous-balance (unwrap-panic
      (contract-call?
        'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.zsusdt-v2-0
        get-principal-balance
        account))
    )
    (balance-increase
      (-
        (unwrap-panic
          (contract-call?
            'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.zsusdt-v2-0
            get-balance
            account
          )
        )
        previous-balance
      )
    )
  )

    (ok 
      (print {
        previous-user-balance: previous-balance,
        current-balance: (+ previous-balance balance-increase),
        balance-increase: balance-increase
      })
    )
  )
)