Arm breaks at elbow backwards with IK

Can someone tell me what I did wrong? When I move the handIK.L the arm breaks at the elbow backwards. I tried changing the rolls, but I it didn’t work (and I don’t know what to change them to.)

Blend file:


You have to have an angle in edit mode for the IK solver to figure out where to go. Currently you have the arm straight. I have edited it to show you how to fix it.

Thanks for responding. I had heard about angling the limbs when modeling. I didn’t know I needed to do that with the bones in edit mode. Hopefully, I’ll be able to copy what you did. It looks like I will be able to.