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>It's really simple - use the same method as they used to do the conversion. Then you won't have any problem here

I don't understand you. However, I just got another idea from different source and I am going to try it first. I think this is what Rob suggested yesterday as well but I didn't understand him fully at first. Instead of having Dictionary String, String I may try Dictionary String, Object. May be this way my problem will be resolved automatically.