Interdependent parameter range

[SKNobat]

Hello everyone

I have a computationally expensive calibration problem (with more than 50 parameters 1 hour per execution) .  All parameters have prescribed ranges but they are also inter dependent , Ex. :

BeginParams

#  name      init.       lower     upper   transformations

     S1     random         0.5      2.5   none

     S2     random         0.25      2.0   none

     S3     random         0.00      1.75  none

#    where S1 < S2  && S2 < S3

EndParams

I cannot figure how / where to add the conditions S1 < S2  && S2 < S3  in Ostrich input. (Sorry if the answer is obvious)

Thank you for your help

Sam