I’m not clear on exactly what you’re trying to do, but if you want to retrieve a value that corresponds to a particular marker, you would get the time of that maker like this:
t = thisComp.layer(“Cntrl Cam 002”).marker.Key(“markername001”).time;
Then you would access the value of the property at that time like this:
thisComp.layer(“Cntrl Cam 002”).transform.orientation.valueAtTime(t);
Something like that.
Dan