[Home](./index.md) > [bitburner](./bitburner.md) > [WarehouseAPI](./bitburner.warehouseapi.md) > [limitMaterialProduction](./bitburner.warehouseapi.limitmaterialproduction.md) ## WarehouseAPI.limitMaterialProduction() method Limit Material Production. Signature: ```typescript limitMaterialProduction(divisionName: string, cityName: string, materialName: string, qty: number): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | divisionName | string | Name of the division | | cityName | string | Name of the city | | materialName | string | Name of the material | | qty | number | Amount to limit to | Returns: void