wpf - How to reference a ResourceDictionary from another assembly -

i have resourcedictionary defined in app.xaml that:

<application x:class="controller.app"              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">     <application.resources>         <resourcedictionary>             <resourcedictionary.mergeddictionaries>                 <resourcedictionary source="resources/mydictionary.xaml" />             </resourcedictionary.mergeddictionaries>         </resourcedictionary>     </application.resources> </application> 

now, since im using prism, would use styles in "mydictionary.xaml" in other modules/assemblies within application.

the problem can access styles in modules like:

<label style="{staticresource mylblstyle}"/> 

but in module cant access same style. error "the resource "mylblstyle" not resolved".

so far couldn't find difference between modules can access resource , modules cant. reading lot packuri etc. couldn't solve problem.

is there else have define or in modules? @ modules work didn't anything. can access styles via:

style="{staticresource mylblstyle}"/>