Wall Intersection Behavior

[Anonymous]

I have a concrete wall abut a CMU wall, which has a lower priority. But I do not want the concrete to cross the CMU (see image to the left). Instead I want the concrete to stop at the face of the CMU like in image to the right where I left small gap so the two do not touch. Is there a way to eliminate the concrete wall crossing when the reference lines touch? Thanks.

[Dontknow]

Put the walls in different layers and adjust the priority.
helpcenter.graphisoft.com/guides/archicad-18-int-reference-guide/configuration/attributes/layers/use...

[Anonymous]

Thank you very much.