why DEVICE crashes when interface property is used ?

Hi. This I believe used to be an issue in an older version of DEVICE which should be fixed now. Can you please check if you are using the most recent version (v.5.1.982). You can check your version number from the “Help” menu option by selecting “About”. If you are using an older version then updating to the newest version should fix this problem. You can download the installer from here: Software Download.

Thanks for reply. The problem solved by deleting the structure and add again.