How to use "/rest/api/1.0/projects/{projectKey}/repos/{repositorySlug}/raw" call in REST API Browser

[metallhead01]

There are no params, only "Send" button. If I tried to send:

{
"errors": [
{
"context": null,
"message": "Project {projectKey} does not exist.",
"exceptionName": "com.atlassian.bitbucket.project.NoSuchProjectException"
}
]
}

Of cause, because I can't filled {projectKey} param. 

The Get request looks like that - https://server_address/rest/api/1.0/projects/{projectKey}/repos/{repositorySlug}/raw (404)