[Limdep Nlogit List] WTP-space MNL model syntax

[Thao Thai]

Dear Nlogit users,

Background: I have two DCE designs differing in one design dimension. I
want to test whether there is a difference in WTPs results between two
designs. As such, I want to run a WTP-space MNL including interactions
between a dummy for design type and WTP values of each attribute.

My issue: Nlogit manual provides instructions on how to run WTP-space for
Mixed logit models. Could you please kindly give me some advice on
the syntax to run a WTP-space MNL model? or some suggestions on another way
to deal with my issue if possible please?

Thank you so much for your help.
Best regards,
Thao