PositionMulti

Field	Type	Description
`reqId`	`int32`	Unique request identifier used for tracking across EWrapper
`account`	`string`	The IBKR account identifier to affiliate the request with
`contract`	`Contract`	Contract object containing defining characteristics for ticker.
`position`	`string`	The number of positions held
`avgCost`	`double`	Average cost of the overall position.
`modelCode`	`string`	Is used to place an order to a model. For example