@p, @a and @r are not working in datatag

Im not sure if this already created but still.

If i put in a commandblock "/summon ThrownEnderpearl ~ ~5 ~

{ownerName:@p,Motion:[-0.2,0.5,0.2]}

" it doesnt work. if it works it could be usefull for mapmaking

for now only this works: "/summon ThrownEnderpearl ~ ~5 ~

{ownerName:DeStilleGast,Motion:[-0.2,0.5,0.2]}

"