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By using the QUERY# function with this syntax: QUERY#(0, Arg_1$[:ParLab_1$],,,,Arg_n$[:ParLab_n$]) for HULLDATA#, you can make sure that already available parameters will be used to pre-filted the options.
For instance when the ship type is already defined earlier in the solution, or is available as starting data in the dataset, you can add the relation HULLDATA# relation HULLDATA# = QUERY#(0, SHIPTYPE$) to make sure that OPTION1 already OPTION1 already uses the value for SHIPTYPE$.
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