complex numbers with integrateODE

Hello,

I'm trying to use the ODE solver for the first time in Igor 6. Both my input and output waves (yw and dydx using the convention in the help files) are complex. I've tried using 

in the derivative function to define my input and output waves. The function compiles alright, but when I try to run the integrateODE function I get an error that "The function has the wrong parameter types or wrong number of parameters to use as an ODE function."

I assume this is because of the complex values. Is there another way to solve ODEs with complex components in Igor? Or a trick to get around this? 

Thanks!