Anyone solved a odb.rootAssembly.instances['Part-1-1'].nodeSets { } call problem ?

Dear all,

I've got myself into trouble in number of instances when trying to access the following path

odb.rootAssembly.instances['Part-1-1'].nodeSets

although when I open my .odb file there are couple of nodeSets defined with default names such as ['SET-1'], ['SET-2'] and so on.  Basically, I cannot access the data inside nodeSets three by scripting. Please, don't suggest the print cmd because I've already tried to find that path and it returns : >> { }

Please let me know if you have any other suggestions on how to fix this?

Thanks in advance, 

RSencu