bitburner-src/markdown/bitburner.hacknet.spendhashes.md
Olivier Gagnon 2b79871c02 doc
2021-11-03 00:27:21 -04:00

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[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [Hacknet](./bitburner.hacknet.md) &gt; [spendHashes](./bitburner.hacknet.spendhashes.md)
## Hacknet.spendHashes() method
Purchase a hash upgrade.
<b>Signature:</b>
```typescript
spendHashes(upgName: string, upgTarget?: string): boolean;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| upgName | string | Name of the upgrade of Hacknet Node. |
| upgTarget | string | Object to which upgrade applies. Required for certain upgrades. |
<b>Returns:</b>
boolean
True if the upgrade is successfully purchased, and false otherwise..
## Remarks
RAM cost: 0 GB
This function is only applicable for Hacknet Servers (the upgraded version of a Hacknet Node).
Spend the hashes generated by your Hacknet Servers on an upgrade. Returns a boolean value - true if the upgrade is successfully purchased, and false otherwise.
The name of the upgrade must be an exact match. The `upgTarget` argument is used for upgrades such as `Reduce Minimum Security`<!-- -->, which applies to a specific server. In this case, the `upgTarget` argument must be the hostname of the server.
## Example
```ts
hacknet.spendHashes("Sell for Corporation Funds");
hacknet.spendHashes("Increase Maximum Money", "foodnstuff");
```