Trouble with subdivision surface sharp edges...

I’ve set the edge crease to 1.0 as shown in the picture… I’ve tried an edge split and every other technique I’ve run across.

I want the outside edges to be smooth, but the inner two edges (that are selected/highlighted) should be sharp. WHY IS BLENDER SMOOTHING THE 90 DEGREE ANGLE BETWEEN THEM? Can it be fixed?

Edge Creasing

Ah yes, thanks, that is the solution! After I submitted the post, I played around with it more and realized that is what I needed to do, but couldn’t edit the post as it was submitted to a moderator (I guess because I’m new here?). :smiley: