Merge Tag - Add Multisite Site Name

I'm trying to add the MU Site Name to Merge Tags drop down.

I found the "Gform merge tags" documentation and using that, I added to functions.php

snippet:

gform.addFilter("gform_merge_tags", "add_merge_tags");
	function add_merge_tags(mergeTags, elementId, hideAllFields, excludeFieldTypes, isPrepop, option){
		mergeTags["custom"].tags.push({ tag: '{site_name}', label: 'Site Name' });

		return mergeTags;

I now see the custom merge tag: "Site Name" in the Merge Tag dropdown but don't see how to assign that tag to the actual site name. I can get the site name using:

//get MU site name
		global $blog_id;
		$local_site_name = get_blog_details( array( 'blog_id' => $blog_id ) );

I'm thinking that the above just adds the tag to the list but somewhere else the content gets assigned to the tag label. ( The docs could be a bit clearer on this subject! )

Any help would be appreciated!

I found this: http://www.gravityhelp.com/documentation/page/Gform_merge_tags

Again, this seems to only show how to add the tag to the merge tag list but not how to assign content to the tag.

is there another example somewhere that shows this?

Still have not found a solution. Anyone have ideas?

Awesome, thanks Chris!

I'll give that a try. Thanks.