I am new to using Applescript in Indigo. I have written a few scripts, but I just replaced an X10 Motion Sensor with an Insteon one. In my old Script, I did some functions triggered by motion and conditioned by the Dawn/Dusk detector being on or off (along with some other things).

I just don't know the proper way to test the on state of my new motion sensor in the script with button 1 and button 2...

I used to do this:
if (on state of device "OUT_SW_Garage Lights" is false and on state of device "OUT_DD_Garage is True) then

the DD is the Dawn Dusk detector. How do I test it button 2?

If you're wanting to track dawn/dusk state according to what the Motion Sensor is reading, then you'll need to use a variable to hold that state (the INSTEON Motion Sensor doesn't hold any states - we create a virtual ON/OFF state for the convenience of users but we don't create one for daylight/dark). Create two triggers which fire when they see Group/Button 2 ON and Group/Button 2 OFF respectively - they should set the variable (named, say, "ms_is_dark") to "true" and "false". Then in your script you just test the variable to see if it's true (which would indicate it's dark).

okay thank you. So in other words, I really can't run the same script and just change the syntax? The variable will work for me though! Thank you!