Look at Effect 3: in the screen images above. The first Actions screen Effect 3: turns on DX10WestFloodF3 which has an X10 address of F3. The Attribute field is “Status” and the Value field “2” is an X10 On command in the first Actions screen image and the value “3” in the second Actions screen image is an X10 Off command. The Value field is the low order 4 bits of the 2nd X10 message which contains House/Command. There is a chart of these values in the EZBridge Reference document in the Downloads sections.
I will have to research what the Venstar requires in this situation. Updated post to follow.