Passing a string to actions.find

I'm trying to create a macro that will find a certain string (a regex string that I use a lot), that will then replace it with another regex string. I have set it up, but instead of the find string being placed in the find box, it's being placed in the text editor. Is there another argument I should be using instead of text?

```
"macros": {
"addSpacesAfterCommas" : [
"actions.find",
{"command": "type", "args": {"text": "search string here"}}
]
}
```