Disallow Wall Join: isWallJoinAllowedAtEnd fails


Error message below is not very clear; expected Wall, got Wall

Warning: IronPythonEvaluator.EvaluateIronPythonScript operation failed.

Traceback (most recent call last): File “”, line 11, in

TypeError: expected Wall, got Wall –


You’ll need to unwrap the Dynamo element first. You’ll find more info on this here:



Thanks Venkov!

I didn’t even think of it, and the error message wasn’t very helpful (Expected Wall, got Wall).

I am still learning the quirks of the APIs But I ended up using it in a wall created in the code and it worked as expected

wall = Wall.Create(doc, line, ElementId(wall_t.Id), ElementId(level.Id), height, base_height_off, False, is_structural)

if not join_walls:

WallUtils.DisallowWallJoinAtEnd(wall, 0)

WallUtils.DisallowWallJoinAtEnd(wall, 1)

if flip_walls: