# fix_modify AtC source_integration command

## Syntax

    fix_modify <AtC fixID> source_integration <fe|atom>

-   AtC fixID = ID of [fix atc](fix_atc) instance
-   source_integration = name of the AtC sub-command
-   *fe* or *atom* = (undocumented)

## Examples

``` LAMMPS
fix_modify AtC source_integration atom
```

## Description

(undocumented)

## Restrictions

None.

## Related AtC commands

-   [fix_modify AtC command overview](atc_fix_modify)

## Default

Default is *fe*