Talk:Commands/@comment-30638545-20171008002820

Hello MCPE community, I hope u can help me on a problem! I'm making a map where when you choose a character, it gives u a sword, using the command /enchant @a sharpness 2 attached with a comparator, and then another command block saying effect @a speed 1 90, but everyone would get the boost, how can you make it so only one specific predetermined person gets the boost without being the closest one to the commandblock or using any Addons?