Webservice - Update several values at the same time

[pilimoon]

Hello,

 

I have been searching for a while without being able to find a solution :

 

I'm using webservice to update color's (as product attribute) positions, and and would like to update the while attribute list in one single PUT request.

 

So far, it seems that webservice edit function require an id/ressource couple, which means I have to loop on each ressource each time there's an update. 

 

Is there any way to get the full XML feed, update it and send it back to update the whole package ?

 

Many thanks for any enlightment on thismatter !