# copy\_dex\_function

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This entrypoint should be called only by `Factory` contract address. 
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This method receives `big_map` of `nat -> bytes` - lambdas of [dex-methods](https://docs.quipuswap.com/smart-contracts/quipuswap-stable-swap-dex/standalone-dex/dex-methods "mention").

### Parameters

<table><thead><tr><th width="188">Field</th><th width="247" align="center">Type</th><th width="448.2">Description</th></tr></thead><tbody><tr><td>-</td><td align="center"><code>big_map(nat, bytes)</code></td><td>mapping of index and bytes of DEX core methods.</td></tr></tbody></table>