Use blender IK bones in Unity

I've been searching for a while (and would search more, but a bit in a rush) and found no way how to properly solve this - I have a stick made out of tiny segments. In blender this stick was rigged. I then added a bone at the very end (now referred as Main). The last bone in the chain in the stick (not Main) has IK and follows Main. Now, in Unity, moving these little bones deforms a mesh, but moving Main does nothing - it doesn't bend the stick. I know I could make an animation in Blender and import it, but i would much more like to know how to do this in Unity with simply moving the Main bone. Thank you.