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:
https://www.youtube.com/watch?v=CllJRQ69ADc
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