[Home](./index.md) > [bitburner](./bitburner.md) > [Sleeve](./bitburner.sleeve.md) > [purchaseSleeveAug](./bitburner.sleeve.purchasesleeveaug.md) ## Sleeve.purchaseSleeveAug() method If you are not in BitNode-10, then you must have Source-File 10 in order to use this function. Return true if the aug was purchased and installed on the sleeve. Signature: ```typescript purchaseSleeveAug(sleeveNumber: number, augName: AugmentName): boolean; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | sleeveNumber | number | Index of the sleeve to buy an aug for. | | augName | [AugmentName](./bitburner.augmentname.md) | Name of the aug to buy. Must be an exact match. | Returns: boolean True if the aug was purchased and installed on the sleeve, false otherwise. ## Remarks RAM cost: 4 GB