Does anyone know how to set up a curve in Unreal's animation sequence inside MotionBuilder when importing an FBX file?

Hi Frd, My question is the tile.

Does anyone know how to set up a curve in Unreal’s animation sequence inside MotionBuilder when importing an FBX file?

For IK setting of the foot in unreal, I want to set a curve in MotionBuilder that can reflect the movement of the foot and bring it to Unreal.(Not thought Maya, but directly Motionbuilder) I know how to do this in Maya, but I don’t know how to do it in Motionbuilder. If you have a friend you know about this, please ask for help.