How would I be able to send the mouse property over to a server script so I can change stuff on the server when a certain condition is met so like if mouse.target == humanoid then fireserver() then in my server script I want to be able to change the targets properties like change Color or kill
You cannot send the mouse object as it only exists locally, you can however send data after you read it, like mouse position or target. The server cannot directly edit or even access the mouse.