server 2012 connection broker and SQL dependency

hi to all ,

we try to evaluate a server 2012 terminal server farm ,with connection broker setup,we do own a physical Domain controller ,and we installed Sql 2012 express editon on that Domain controller ,but then we could not  create the Connection broker setup.

After the error,we setup a new member server,joined it to our domain  ,we installed sql 2012 standart edition ,then we can succesfully create the connection broker setup.

What i am trying to learn is ,Can we use sql 2012 express on this kind of setup.We did not find the prequesties for this setup ,specifically mentioning which sql edition can be used .

thanks.