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MBC multiple conditions for dependent variables


Apologies if this has been answered somewhere before, but I couldn't quite get to the answer to my problem.

In MBC, is it possible to set up dependent variables for multiple conditions?
I have a 'main product' section in my MBC tasks where respondents choose/configure a product. If they do buy a product, they can then add certain services to it. However, within the 'service section' I have a product availability variable. So effectively I would need to specify that a service choice is dependent on choosing a product from the 'main section' first, and then on the availability independent variables within the 'service section'.  

Is there a way to do this in the software via certain alt-spec coding and missing values, or do I have to filter my data file on tasks where a main product was chosen and set the conditions up on the availability variable (and ignore the main product choice variables).

I hope this makes sense. Thanks in advance.
asked Dec 18, 2017 by Dominik

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