GLAPLACE XFORM Syntax Recommendation

Hi all, I am looking to see if anyone has a recommendation on how to enter this s-domain polynomial into the XFORM property field more compactly? 

(1.76633807e-28*s*s*s*s*s*s*s + 4.37752348e-24*s*s*s*s*s*s + 2.21287946e-20*s*s*s*s*s + 1.63859923e-16*s*s*s*s + 4.51408684e-13*s*s*s + 1.45284939e-9*s*s + 1.42274997e-6*s + 1.19109226e-3) / (-2.49510738e-29*s*s*s*s*s*s*s*s + 3.28470008e-24*s*s*s*s*s*s*s + 1.36672855e-20*s*s*s*s*s*s + 2.41372502e-16*s*s*s*s*s + 6.79605490e-13*s*s*s*s + 4.23416528e-9*s*s*s + 6.15007649e-6*s*s + 6.30604299e-3*s + 1)

It's an 8th order polynomial curve fit for an impedance model. It has been tested and works. 

I tried to create .PARAM statement in an include file for "num" and "den" but it didn't like the 's' variable which makes sense but the above is super cumbersome. Is there a way to define other properties and have XFORM reference that?

Thanks!