Then add the protocol handler "cismdx" (which will call the script
"cismdx_opendx_webcall") by right clicking on the gray "Preference Name" bar and selecting "New->String".
Enter "network.protocol-handler.app.cismdx" in the dialog box and select "OK".
When you are prompted to enter a string value, enter
"/usr/local/CISM_DX/cismdx_opendx_webcall". When complete, you should see a
line as shown in the black box below.