attach a timer to an embedded subprocess inside a Multiple instance

When I try to atach a timer event to an embedded sub process who is inside of an multiple instance node I get the following error:

Process 'Test' [TestFlow]: Timer node '' [12] has no incoming connection

I dont know if this cant be done in some other versions of JBPM/BRMS but the thing is that I really need to atach that timer becouse without that I can finish the bussnes process requierements

FYI... I am using the web designer