[Typo3-dev] How to substitue values in "ext_typoscript_constants.txt"

[Sebastian Faulhaber]

Hey group,

i write an extension, that is not a frontend plugin. Despite of this I 
do need the $conf array, as it is provided for frontend plugins in the 
main($content, $conf) function.

Any idea how I ca do that?

At the moment I read in the ext_typoscript_setup.txt, but the constant 
values are not substituted:
ncludeLibs.	
template_product_detail 
-->{$plugin.ecommerce_prod_templ.file.template_product_detail}
template_product_list 
-->{$plugin.ecommerce_prod_templ.file.template_product_list}

Thanks for your help in advance!

Sebastian