> For the complete documentation index, see [llms.txt](https://sharpsync.gitbook.io/sharpsync/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sharpsync.gitbook.io/sharpsync/~/changes/zcOMaRcqMhiRElzWzdJZ/property-mappings/rule-templates/import-export/export-manipulation.md).

# Export manipulation

Modifies the outgoing data before it is sent to the secondary source.

Type: Export only

It is important to note two things:

1. There can be only one of these rules as it modifies all outgoing data
2. The return variable must always be named`s`. `s` represents the `rowData.sourceExportData` to be modified. Failing to return it will result in corrupted data in the BOM.

e.g. given this Javascript for an isPhantom setting

```javascript
const isNewAssemblyRow = 
rowData.isAssemblyRow && 
rowData.isMissingInSecondaryDatasource == true && 
rowData.isFoundInSecondaryDatasource == false; 

if (!isNewAssemblyRow) 
{ delete s['phantomYN']; }  

if (rowData.isAssemblyRow === true)  
{ delete s['material']; }   

return s;

```

<details>

<summary>Example</summary>

* Cell value: 12.53 m
* Rule values:
  * Number of decimals: 4
  * Remove text: kg|Kg|g|mg|m|mm|each|L|ml|oz|fl
* Result: 12.5300

</details>