Restyle only one subplot

is it possible to only restyle one subplot ?
So far i’ve got one div with two subplots in it and they both should show me one different line with Data in it.
I made a function to add a Point per click. So if click on a line i get an additional point to it. It works really well, my problem is that i only want the point created in the subplot i also clicked in . So if i click on the top Subplot i get a point there and not also at the second subplot.
My question is if its possible to restyle only one subplot with data ? Do i always have to put in both data in my restyle ? cause if i only put the data of my top subplot it restyles the div without the bottom subplot.