CPack + Wix + WixFirewallExtension - can I add a new xmlns to the filex.wxs file?

Code
2

Hello,
Just use xmlns:fire into fire:FirewallException
like this

<CPackWiXFragment Id="CM_FP_myapp.exe">
    <fire:FirewallException xmlns:fire="http://schemas.microsoft.com/wix/FirewallExtension" Id="FWX1" Name="My App" Scope="any" />
</CPackWiXFragment>