Angélique hi,
I am not sure that I understood the question, could you, please elaborate by email/Zoom, if it's possible. I guess that you need access proxy variables of multiple objects at once. In this case, you can create the so-called Proxy Array, which would allow selecting a single value by index, e.g. ResponseTime[3]. To do it, select multiple objects in EventIDE GUI, click on the shared property name and then add a proxy variable-> array
Cheers, Ilia