LM Remote Service to access Storage

[emme]

the LM docs shows that external API can require
Objects (those marked as EXPORT)
goups
errors
alerts

but... what about willing to access a storage key?

I do have a key that recap all the power consumption, by Year, by monts, by week, by day and by hours
this create a huge structured key....
I'm willing to get it from outside to be pushed to a sql server (I know I can do it straight forward from LM, but I SQL server is not reachable from the LM network so I need to men-in-the-middle) but I cannot figure out how could I do that

thanks 
ciao
M