I have attached two screen shots for what I did to get a feedback button.
I have a relay on a GC-100 I use to power sequence some amps. With these conditional, variables and feedbacks I have it programmed so when the relay is closed ( amps on ), the button is a green power button, and when it's off it's the red one.
First I configured a feedback by connect to the device and using the "set variable" field of "Relay 1" to be "stateRelay1" ( note you don't need to hit the gears here, it's always a variable).
The I added the if else conditional to the power button press as shown below. When pressed both the state viable and the variable for the image are updated.
Lastly, I configured an entrance program to run the query, and update the image to that the image will be in sync from other action. I enabled repeats here every 1 second.
I did get tricked up with the conditionals, I just entered my variable into the field like the feedback's "set variable" field. However this was just a string and didn't compare correctly. For conditionals you have to click on the gear to the the $variable$
Now this whole thing was rather time consuming, and now that these feature are here I need to figure out exactly what to do with them...