Help Make rope into a slingshot to launch a sphere

[Brainiac]

Thank you for your help!
I tried adjusting max bending and increased the mass of the sphere, and it helped!

I also went into the path editing mode and decreased the mass of each point.
Also, I wondered whether if adding more points would help to make the rope more bendy.

I included the images again to this post. Please let me know if you can see them now.

Thanks! 

Rope Object:
   

[b]Sphere:[/b]
   

[b][b]Slingshot Blueprint:[/b][/b]
   

[b][b][b]Solver:[/b][/b][/b]