7'-0" (door leaf height) + 1 1/2" (frame thickness) - 1/2" (frame rebate) + 1/2" (threshold thickness) = 7'- 1 1/2" (unit height)
ArchiCAD calculates the unit height as 7'-1", ignoring the threshold thickness.
I was not able to create a property for 'Unit Height w Threshold' because the Threshold Thickness parameter (gs_treshold_thk) isn't available from the list of Parameters & Properties available in the Expression Editor.
MacBook Pro 13" - 2019
2.8GHz quad-core i7 w/ 16GB
AC21-25