     yield transactions.Transaction.findByIdAndUpdate(transactionId, updates).exec()
     this.body = "Transaction with ID: #{transactionId} successfully updated"
     this.status = 'ok'
-    logger.info 'User %s updated transaction with id %s', this.authenticated.email, transactionId
+    logger.info "User #{this.authenticated.email} updated transaction with id #{transactionId}"
   catch e
     util.logAndSetResponse this, 'internal server error', "Could not update transaction via the API: #{e}", 'error'
 

    result = yield transactions.Transaction.findById(transactionId, projectionFiltersObject).exec()

    # Test if the result if valid
    if result is null or result.length is 0
      this.body = "Could not find transaction with ID: #{transactionId}"
      this.status = 'not found'
    # Test if the user is authorised
    else if not authorisation.inGroup 'admin', this.authenticated
      channels = yield authorisation.getUserViewableChannels(this.authenticated)
      if getChannelIDsArray(channels).indexOf(result.channelID.toString()) >= 0
        this.body = result
      else

    # Try to add the new transaction (Call the function that emits a promise and Koa will wait for the function to complete)
    yield Q.ninvoke tx, "save"
    this.status = 'created'
    logger.info "User #{this.authenticated.email} created transaction with id #{tx.id}"
  catch e
    util.logAndSetResponse this, 'internal server error', "Could not add a transaction via the API: #{e}", 'error'

