I'm trying to make an effect happen on the instance the mouse is over but it wont work

i have a 3dshape and i want its size to sine when the mouse is over it. it works until the mouse goes strait to another instance, which causes both to sine not just the one the mouse is over. the code is like this:

if cursor is over 3dshape - set sine enabled

else - set sine disabled, set size to 16 x 16

the problem is that the condition is true if any instance is under the mouse, so both instances sine if you hover over one and then the other. I want to be able to effect only the one the mouse is on. help please

Adding system 'for each' shape to the condition should fix this

that didn't fix it but it did just lead me to actually find a fix. i used pick instance overlapping point and just set the point to the mouse position. thanks for the help bro