Unable to call a function from mattermost-redux library

I’m trying to use a function called searchPostsWithParams in mattermost-redux/src/actions/search to retrieve posts limited by some params like channel name.

The function was called under registry.registerPostsDropDownMenuAction

var messages = searchPostsWithParams(teamid, param)

Is this the right way to call a function from mattermost-redux/src/actions/search? But i cant get the posts as i expected.

Any information on how to solve this issue? Thanks in advance.