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<https://github.com/IHP-GmbH/IHP-Open-PDK/issues/248|#248 Xyce sg13g2_moshv_stat.lib parameter question>
Issue created by <https://github.com/olisnr|olisnr>
when trying to use mostt_stat in Xyce i get an error:

```
...
Parameter VFBO for model X1:XM3:SG13G2_HV_NMOS_PSP contains unrecognized symbols:
 {-0.89839*(1+(sg13g2_hv_nmos_vfbo_mm-1)/sqrt(m*l*w*1e12))}
*** Xyce Abort ***

```

if i change `ihp-sg13g2/libs.tech/xyce/models/sg13g2_moshv_stat.lib` to

```
...       
* ngspice statistical parameters
.param sg13g2_hv_nmos_vfbo_mm        ='gauss(sg13g2_hv_nmos_vfbo_mm_norm,   0.004,  mc_ok)'
.param sg13g2_hv_nmos_rsgo        ='gauss(sg13g2_hv_nmos_rsgo_norm,      1e-9,   mc_ok)'
...

```

it simulates.

the `ihp-sg13g2/libs.tech/xyce/models/sg13g2_moslv_stat.lib` has no `*vfbo_mm`. may be there is something wrong.
<https://github.com/IHP-GmbH/IHP-Open-PDK|IHP-GmbH/IHP-Open-PDK>