Nested door with opening angle parameter

Start with a door opening and frame from template door.rft

Make sure the door frame is driven by ref planes especially the hinging point

Add a ref line and end-point lock to two intersecting planes (align tool - then hover-tab until the ref line end point displays and then lock

Add an angle dim to the ref line  and make this the opening angle param.

Create the door panel as Generic Model face based so that it is vertical to the template face with simple params for width, height and thickness.

Load the nested panel in, SET tool, select the ref line and tab through until the horiz ref plane displays. Select place on ref plane.

Hover over the ref line, spacebar until the door aligns (the nested family face will be the origin) and then select and move along until the panel edge snaps to the ref line hinge end point. Also align-select the ref line and lock.

The door should then flex properly with the angle param