Alter statement usage for trimming (reelaborate card)

Hi all!

I'm exploring the potentialities of alter statement and I found the re-elaborate option (boolean type), which basically re-elaborates the circuit and trigger the expression evaluation in the circuit. 

I want to create a netlist capable of trimming a reference circuit, using in the first part a simulation a DC sweep to calculate through a cross() function the respective trimming word, and then put it in subsequent simulations.

I have tried something like this with no success:

alter1 alter param=trim_val_par value=int(cross(i("R0:1" ?result "dc-dc") 1.8e-6  1 "rising" nil nil)) reelaborate=yes

How I could perform it? Alt

Thanks!