Create a new C++ class (right-click within the content browser). Make sure “Show All Classes” is checked. Choose Parent Class: “AnimInstance”
And below the “public:” line in your newly created .cpp file, add the following method (not tested, but this should work)
UFUNCTION(BlueprintCallable)
void EnableRootMotionMode(bool bEnable)
{
if (bEnable)
{
this->RootMotionMode = ERootMotionMode::RootMotionFromMontagesOnly;
}
else
{
this->RootMotionMode = ERootMotionMode::IgnoreRootMotion
}
}
i hope this helps, cheers!