I can successfully able to search multiple values in the web service using ‘ISCONTAINED‘ in the field which is set as the ‘OBL’ field in search method without any maximum limit to pass as values.
Regarding setting multiplicity as ‘ANY’ in the field with search method ‘OBL’, when ‘OBL’ is set as the search method for the field, we have to provide at least one value in the filter for the field to execute the query.
The multiplicity indicates how many values can be included in the source query for the given attribute and operator. When the multiplicity is set to “ANY”, the filter can take any number of values - including 0. Hence, when the search method is 'OBL', we cannot set multiplicity as 'ANY' or '0'.
To get more information, you can have a look at the sections [Query Capabilities](https://community.denodo.com/docs/html/browse/7.0/vdp/administration/creating_derived_views/advanced_configuration_of_views/query_capabilities#query-capabilities) of the Virtual DataPort Administration Guide and [Query Constraints](https://community.denodo.com/docs/html/browse/7.0/vdp/vql/creating_a_base_view/query_capabilities_search_methods_and_wrappers/query_constraints#query-constraints) of the Virtual DataPort VQL Guide.
Hope this helps!