[users at bb.net] How to interpolate a Property with dictionary value

[Martin Liška]

Hi.

I have following Property from 'Force Build Form':

Name	Value	Source
options	{"spec_options":"-O2 -march=native","spec_version":"2006"}	Force Build Form

My question is how to interpolate 'spec_options' subkey?

%(prop:options:spec_version)s selector does not work.

Thanks,
Martin