Hi guyz, I had stucked in a problem where I need to add a point between two point and want to retain the curvenous of the spline so I had searched and used add spline point but it adds the point to the end of the spline. So, this post is only for beginners if you want to add a spline point between two spline points without disturbing the spline you can use “Add spline point at index” you don’t have to give rotation, tangent anything it will calculate these automatically. And if you want to get a smoother " Bézier curve " then you can take a look at this thread: Calculate Spline Tangent - #3 by Kehel18