For tokens which the user controls (including DM)
/w playername @{selected|attribute}
For tokens which the user does not control (still can be used with tokens the user controls)
/w playername @{target|attribute}
Replace playername with the name of the player.
Replace "attribute" with the name of the attribute.
If you want to automate the playername portion that is doable, but I would need to know if someone else is using this and sending it to the player or if the player is using this and sending it to themselves.
Note: you can use the "target" version and skip the "selected" version entirely, I am presenting both for completeness.