[ossia-max] write to one Vec member only

[bltzr]

in score we can write to one Vec member only (e.g. z of a xyz parameter by using this syntax:
/source/pos@[position.cart3D.z]

knowing that we can use the type as an attribute, what would be the best syntax to do this in ossia-max, in your opinion, members of @ossia/max ?
Something like :
[ossia.remote /source/pos[z] @unit xyz]
maybe ?

I believe brackets are reserved for pattern-matching, opinions, @avilleret and @jcelerier ?

(also mentioning @navid and @petervanhaaften since you're not in the group yet)