[Home](./index.md) > [@contract-case/case-boundary](./case-boundary.md) > [BoundaryStateHandler](./case-boundary.boundarystatehandler.md) > [setup](./case-boundary.boundarystatehandler.setup.md) ## BoundaryStateHandler.setup() method Call the user's state setup function. If the user provided no setup function, this should be a function that does nothing and returns a `BoundarySuccess` **Signature:** ```typescript setup(): Promise; ``` **Returns:** Promise<[BoundaryResult](./case-boundary.boundaryresult.md)> Either a `BoundaryFailure` with `kind=BoundaryFailureKindConstants.CASE_CONFIGURATION_ERROR` or a `BoundarySuccess` when there's no variables returned, or a `BoundarySuccessWithMap` when there are variables returned