Buildings Allow function wont accept multiple triggers

[Magnar]

Im trying to lock buildings by trade good. Theoretically a function like this should work

allow = {
       or = {
       trade_goods  = grain
       is_importing_trade_good = grain
       }
   }

but the allow function only seems to read the first trigger and ignores the 2nd, i also cant add IF functions to it to try get around it.

Is this intentional?

 

[Magnar]

would also be nice to do for unit requirements ie a unit requiring multiple trade goods to be recruited or multiple other conditions eg iron + horses for heavy cavalry