Add a parentheses before the "Type is B1" row. Add the "Type" criterion again. Set it to "Type is B2". Add a parantheses after this row.
This was your two Type criteria are within a parantheses.
Now modify the "AND" at the end of the first Type criterion to "OR".
So it will read:
(Type is B1 OR
Type is B2)
Then it will work.
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Thank you for your reply,
However doing this, I am still unable to add the same object parameter. The option is still greyed out within a parantheses. Seems to work with default parameters but not object parameters.
Yes, if you mean you wish to add the same Object parameter twice in the Fields panel of the Dialog so the same value appears in two Columns in the generated Schedule?
What I would do is I would create a new custom IFC Property and create a mapping rule for it, and assign that value of the Object parameter to the IFC Property. Then you could also display the IFC PRoperty in the schedule but it would always have the same value as the Object Property.
See this clip, which explains how this is done: