[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) > [(constructor)](./case-definition-dsl.matchers.convenience.changeloglevel._constructor_.md) ## matchers.convenience.ChangeLogLevel.(constructor) 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 constructor(logLevel: string, child: AnyMatcherOrData); ``` ## Parameters

Parameter	Type	Description
logLevel	string	The new LogLevel. One of "none" \| "error" \| "warn" \| "debug" \| "maintainerDebug" \| "deepMaintainerDebug". see \[LogLevel\](https://case.contract-testing.io/docs/reference/configuring\#loglevel-none--error--warn--debug--maintainerdebug) for details
child	AnyMatcherOrData	The next matcher in the tree.