No Tile Map asset variable??

Hi everyone,

I want to create a variable that can hold a reference to a tile map asset for use with the “set tile map” node. (as opposed to using the drop-down menu included on the node itself.) Unfortunately, I can’t seem to find any way to do that. Is there really no such thing as a Tile Map variable; and, if not, is there another way to accomplish what I want to do?