Populate list field columns

Hi there,

I wonder if (and how) it is possible to manipulate list-field entries with colums using e.g. gform_pre_submission_filter ? The idea is to collect data throughout as the user enters stuff, enrich it with other data and populate the multi-column-list-fields on the next tab. Pre-populating with gform_field_value_ works well, but this is only called initially and not after the user entered stuff.

Any ideas?

Thanks and regards,