I made the subsystem; I verified that it works by plugging a ramp signal into it and attaching a probe.

However, when I use it in my actual model I get the following error:

CreateDataRecord: Simulating model...
CreateDataRecord: problem creating integrator at t=0
CreateDataRecord: problem encountered at t = 0.:
   cannot numerically solve complex DAE initial value problems, the system must be converted to a real system
CreateDataRecord: done (93ms)
Simulate: generating plot data...
(in MapleSim:-EvalDataRecord:-GetData) no data
Simulate: generating visualization data...
(in MapleSim:-EvalDataRecord:-GetData) no data
 

Any suggestions?

I was hoping there was some kind of method like that. Thanks for the reply!