How to send model object in Html.RenderAction (MVC3)

Question

I'm using MVC3 razor, and I'm trying to pass an object to a partial view, and it's not working.

This works fine without sending the object model to the partial view:

Html.RenderAction("Index", "ViewName");

Trying this doesn't sent the model object, i'm getting nulls instead (the object has data, and the view expects it):'

Html.RenderAction("Index", "ViewName", objectModel);

Is this even possible using RenderAction?

Thanks!

Edit: I found the error, there was an error with the controller's action that didn't pick up the sent object. Thanks for all your help!