COULD NOT SET HYDRAULIC GRADIENT RESULTS-PYTHON

Hello;

Actually, i have been wondering that;I ge the results for hgt like this :

Hgt=g_o.getresults(g_o.Phases[-1], g_o.ResultTypes.Soil.HydraulicGradientTot, 'node')

I could read the results on hgt but i could not set any result in the list like ;Hgt[100]=-1 on any other var type etc. This gave an error.Is there a method or a function to set the hgt result or did i miss something simple?

Thank you

Emre Dumlu