How to toggle "is playing" on a skeletal mesh actor?

This is sort of strange. On my skeletal mesh actor (which has an animation asset attached to it) there’s a check box which says “playing” where the user can set the default value. However, in blueprint, when I try to toggle this check box, all I can find is the ability to get the boolean but not **set **it. I understand that I’m able to select the animation sequence separately, but is there any way to toggle the “playing” check box so the default animation can be used?

I believe this is only set if a montage is playing, so the only way to set this is if an animation is actually playing.