[Home](./index.md) > [@contract-case/case-definition-dsl](./case-definition-dsl.md) > [matchers](./case-definition-dsl.matchers.md) > [convenience](./case-definition-dsl.matchers.convenience.md) > [ChangeLogLevel](./case-definition-dsl.matchers.convenience.changeloglevel.md) ## matchers.convenience.ChangeLogLevel class Alters the ContractCase log level below this matcher. Useful for debugging. This has no effect on matching. Note that this log level matcher will be saved into the contract, so it will also affect the log level during verification. Usually you will want to remove the use of this matcher before saving the contract. **Signature:** ```typescript export declare class ChangeLogLevel extends CascadingContextMatcher ``` **Extends:** CascadingContextMatcher ## Constructors

Constructor	Modifiers	Description
[(constructor)(logLevel, child)](./case-definition-dsl.matchers.convenience.changeloglevel._constructor_.md)		Alters the ContractCase log level below this matcher. Useful for debugging. This has no effect on matching. Note that this log level matcher will be saved into the contract, so it will also affect the log level during verification. Usually you will want to remove the use of this matcher before saving the contract.

## Methods

Method	Modifiers	Description
[toJSON()](./case-definition-dsl.matchers.convenience.changeloglevel.tojson.md)		For non-TypeScript implementations (see `AnyMatcher.toJSON`)