How can a Procedure be used in Ocean Output Expressions?

Hi,

I am trying to clean up the output expressions in my OceanXL file by defining and using a procedures to replace the repetitive expressions. However, whatever I try, I keep getting Undefined function Error and the calculation gives eval err... as if it does not pick up the Procedure or does not recognize it as a Procedure. Here is what I am doing:

procedure( calc_dco_start_time(dco_node supply)
          cross(VT(dco_node) (0.5 * supply) 5 "rising" nil nil nil)
         ) ;proc

ocnxlOutputExpr( "calc_dco_start_time(\"DCO_PHASE<0>\" VAR(\"VCC\"))" ?name "start_time" ?plot t ?save t)

and here is all the things I have tried so far:

1) Since it didn't work having both the procedure and the outputexpr in the body of my ocean script, I tried putting the procedure in a separate .il file, meas_funcions.il, and doing load("meas_functions.il") at the body.

2) I tried using (defInitProc "calc_dco_start_time" 'calc_dco_start_time) 

3) I added load("meas_functions.il") to ~/.oceanrc file

4) I added load("meas_functions.il") to ~/.cdsinit

Can a procedure be called inside oceanxloutputexpr or not? If so, what is it that I am missing here?

I am using Cadence IC618 and running sims with Spectre APS version 18.1. Not sure if it makes a difference or not, but I am running ocean from unix command line.

Thanks a lot!

Aynaz